Submitted URL: https://bit.ly/3x29Ipq
Effective URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Submission: On August 05 via manual from IN — Scanned from DE

Summary

This website contacted 19 IPs in 2 countries across 16 domains to perform 64 HTTP transactions. The main IP is 34.68.4.21, located in Council Bluffs, United States and belongs to GOOGLE-CLOUD-PLATFORM, US. The main domain is www.classcentral.com. The Cisco Umbrella rank of the primary domain is 574592.
TLS certificate: Issued by Sectigo RSA Domain Validation Secure ... on March 30th 2022. Valid for: a year.
This is the only time www.classcentral.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

Apex Domain
Subdomains
Transfer
17 classcentral.com
www.classcentral.com — Cisco Umbrella Rank: 574592
298 KB
11 imgix.net
ccweb.imgix.net — Cisco Umbrella Rank: 898383
108 KB
10 youtube.com
www.youtube.com — Cisco Umbrella Rank: 111
797 KB
6 ytimg.com
i.ytimg.com — Cisco Umbrella Rank: 141
115 KB
4 googleapis.com
jnn-pa.googleapis.com — Cisco Umbrella Rank: 346
30 KB
4 google-analytics.com
www.google-analytics.com — Cisco Umbrella Rank: 52
region1.google-analytics.com — Cisco Umbrella Rank: 2742
21 KB
3 doubleclick.net
googleads.g.doubleclick.net — Cisco Umbrella Rank: 55
static.doubleclick.net — Cisco Umbrella Rank: 458
1 KB
2 getclicky.com
static.getclicky.com — Cisco Umbrella Rank: 10602
in.getclicky.com — Cisco Umbrella Rank: 8843
6 KB
2 cloudfunctions.net
us-central1-class-central-prod.cloudfunctions.net — Cisco Umbrella Rank: 824441
76 B
1 plyr.io
cdn.plyr.io — Cisco Umbrella Rank: 14426
3 KB
1 noembed.com
noembed.com — Cisco Umbrella Rank: 27219
1019 B
1 ggpht.com
yt3.ggpht.com — Cisco Umbrella Rank: 261
3 KB
1 google.com
www.google.com — Cisco Umbrella Rank: 10
14 KB
1 gstatic.com
fonts.gstatic.com
16 KB
1 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 94
73 KB
1 bit.ly
bit.ly — Cisco Umbrella Rank: 4554
286 B
64 16
Domain Requested by
17 www.classcentral.com www.classcentral.com
11 ccweb.imgix.net www.classcentral.com
10 www.youtube.com www.classcentral.com
www.youtube.com
6 i.ytimg.com www.classcentral.com
www.youtube.com
4 jnn-pa.googleapis.com www.youtube.com
2 googleads.g.doubleclick.net 1 redirects www.youtube.com
2 us-central1-class-central-prod.cloudfunctions.net www.classcentral.com
2 region1.google-analytics.com www.googletagmanager.com
2 www.google-analytics.com www.classcentral.com
www.google-analytics.com
1 cdn.plyr.io www.classcentral.com
1 noembed.com www.classcentral.com
1 yt3.ggpht.com www.youtube.com
1 www.google.com www.youtube.com
1 static.doubleclick.net www.youtube.com
1 fonts.gstatic.com www.youtube.com
1 in.getclicky.com static.getclicky.com
1 static.getclicky.com www.classcentral.com
1 www.googletagmanager.com www.classcentral.com
1 bit.ly 1 redirects
64 19

This site contains links to these domains. Also see Links.

Domain
www.facebook.com
twitter.com
Subject Issuer Validity Valid
*.classcentral.com
Sectigo RSA Domain Validation Secure Server CA
2022-03-30 -
2023-04-29
a year crt.sh
*.google-analytics.com
GTS CA 1C3
2022-07-11 -
2022-10-03
3 months crt.sh
*.imgix.com
GlobalSign Atlas R3 DV TLS CA 2022 Q2
2022-06-01 -
2023-07-03
a year crt.sh
edgestatic.com
GTS CA 1C3
2022-07-18 -
2022-10-10
3 months crt.sh
misc.google.com
GTS CA 1C3
2022-07-18 -
2022-10-10
3 months crt.sh
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3
2022-06-04 -
2023-06-03
a year crt.sh
*.getclicky.com
Sectigo RSA Domain Validation Secure Server CA
2022-08-01 -
2023-09-01
a year crt.sh
*.google.com
GTS CA 1C3
2022-07-18 -
2022-10-10
3 months crt.sh
*.gstatic.com
GTS CA 1C3
2022-07-11 -
2022-10-03
3 months crt.sh
*.doubleclick.net
GTS CA 1C3
2022-07-18 -
2022-10-10
3 months crt.sh
upload.video.google.com
GTS CA 1C3
2022-07-18 -
2022-10-10
3 months crt.sh
www.google.com
GTS CA 1C3
2022-07-11 -
2022-10-03
3 months crt.sh
*.googleusercontent.com
GTS CA 1C3
2022-07-18 -
2022-10-10
3 months crt.sh
noembed.com
R3
2022-07-05 -
2022-10-03
3 months crt.sh
*.plyr.io
GTS CA 1P5
2022-07-05 -
2022-10-03
3 months crt.sh

This page contains 2 frames:

Primary Page: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Frame ID: C9AFB559BA5AE4B2CAE1429EBF308788
Requests: 56 HTTP requests in this frame

Frame: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Frame ID: 6C132457815FEDED8D21BE8AE211BC25
Requests: 17 HTTP requests in this frame

Screenshot

Page Title

Introduction to Algorithms (Fall 2011) > 1. Algorithmic Thinking, Peak Finding| Class Central Classroom

Page URL History Show full URLs

  1. https://bit.ly/3x29Ipq HTTP 301
    https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • <meta[^>]*google-signin-client_id

Overall confidence: 100%
Detected patterns
  • static\.getclicky\.com

Overall confidence: 100%
Detected patterns
  • google-analytics\.com/(?:ga|urchin|analytics)\.js

Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtag/js

Page Statistics

64
Requests

98 %
HTTPS

84 %
IPv6

16
Domains

19
Subdomains

19
IPs

2
Countries

1486 kB
Transfer

4480 kB
Size

11
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. https://bit.ly/3x29Ipq HTTP 301
    https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 57
  • https://googleads.g.doubleclick.net/pagead/id HTTP 302
  • https://googleads.g.doubleclick.net/pagead/id?slf_rd=1

64 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request classroom
www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/
Redirect Chain
  • https://bit.ly/3x29Ipq
  • https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
543 KB
106 KB
Document
General
Full URL
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
059fec19e041d739b8922366ff0357a3a9d349aeeae6b152c9d11432196fe433
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

cache-control
max-age=0, must-revalidate, private
content-encoding
gzip
content-type
text/html; charset=UTF-8
date
Fri, 05 Aug 2022 09:42:13 GMT
expires
Fri, 05 Aug 2022 09:42:13 GMT
server
nginx
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-content-type-options
nosniff
x-frame-options
sameorigin
x-xss-protection
1; mode=block

Redirect headers

alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
cache-control
private, max-age=90
content-length
194
content-type
text/html; charset=utf-8
date
Fri, 05 Aug 2022 09:42:13 GMT
location
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
server
nginx
via
1.1 google
js
www.googletagmanager.com/gtag/
206 KB
73 KB
Script
General
Full URL
https://www.googletagmanager.com/gtag/js?id=G-C254RZPQ1X
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:82a::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
e14d8f1b115566e1635944ea72f133d258fc6b795eb10a6f1f2b844c396082d2
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
br
server
Google Tag Manager
access-control-allow-headers
Cache-Control
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
strict-transport-security
max-age=31536000; includeSubDomains
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
74617
x-xss-protection
0
expires
Fri, 05 Aug 2022 09:42:14 GMT
analytics.js
www.google-analytics.com/
49 KB
20 KB
Script
General
Full URL
https://www.google-analytics.com/analytics.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:813::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
a1925038db769477ab74b4df34350c35688a795bb718727b0f4292a4a78a6210
Security Headers
Name Value
Strict-Transport-Security max-age=10886400; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

strict-transport-security
max-age=10886400; includeSubDomains; preload
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Wed, 13 Apr 2022 21:02:38 GMT
server
Golfe2
age
2414
date
Fri, 05 Aug 2022 09:02:00 GMT
vary
Accept-Encoding
content-type
text/javascript
cache-control
public, max-age=7200
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
20006
expires
Fri, 05 Aug 2022 11:02:00 GMT
lightning-yellow.svg
www.classcentral.com/images/promobar/
719 B
672 B
Image
General
Full URL
https://www.classcentral.com/images/promobar/lightning-yellow.svg
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
4e371bb1dd016b0f1eda0b014cbaecf8897e104f7ae61b5a11070a7073e5225f
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Sat, 10 Jul 2021 00:51:26 GMT
server
nginx
x-frame-options
sameorigin
etag
W/"60e8ef0e-2cf"
vary
Accept-Encoding
content-type
image/svg+xml
strict-transport-security
max-age=31536000; includeSubDomains; preload;
x-xss-protection
1; mode=block
truncated
/
230 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
17a46201b504c4f6d08d4143ff6e474c08fc66aaa4ca6c5063febc756a620982

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
truncated
/
3 KB
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
49745a3105d5f508c9cf37aa7571b352359608ebb1a8e30864e5b74cfc48d56c

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
source-sans-pro-600-semibold-latin.woff2
www.classcentral.com/fonts/source-sans-pro-hinted/
16 KB
16 KB
Font
General
Full URL
https://www.classcentral.com/fonts/source-sans-pro-hinted/source-sans-pro-600-semibold-latin.woff2
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
efb3cdc5e4582fd67dffab6fc6e5062074ce3f8c51747346af944e97749dc309
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Origin
https://www.classcentral.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Thu, 15 Oct 2020 04:50:23 GMT
server
nginx
etag
"5f87d50f-3e4c"
x-frame-options
sameorigin
content-type
font/woff2
cache-control
max-age=31536000
strict-transport-security
max-age=31536000; includeSubDomains; preload;
accept-ranges
bytes
content-length
15948
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
source-sans-pro-700-bold-latin.woff2
www.classcentral.com/fonts/source-sans-pro-hinted/
15 KB
16 KB
Font
General
Full URL
https://www.classcentral.com/fonts/source-sans-pro-hinted/source-sans-pro-700-bold-latin.woff2
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
24f7e397faec79e62c37ff2f00b170f6dc1557fb46ac169f9f1897a9d641dd03
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Origin
https://www.classcentral.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Thu, 15 Oct 2020 04:50:23 GMT
server
nginx
etag
"5f87d50f-3d94"
x-frame-options
sameorigin
content-type
font/woff2
cache-control
max-age=31536000
strict-transport-security
max-age=31536000; includeSubDomains; preload;
accept-ranges
bytes
content-length
15764
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
source-sans-pro-400-regular-latin.woff2
www.classcentral.com/fonts/source-sans-pro-hinted/
16 KB
16 KB
Font
General
Full URL
https://www.classcentral.com/fonts/source-sans-pro-hinted/source-sans-pro-400-regular-latin.woff2
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
a9950fa5ca9cf47072770900d259bcf6778aa1119652d2e706d5eb92df254199
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Origin
https://www.classcentral.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Thu, 15 Oct 2020 04:50:23 GMT
server
nginx
etag
"5f87d50f-3ef0"
x-frame-options
sameorigin
content-type
font/woff2
cache-control
max-age=31536000
strict-transport-security
max-age=31536000; includeSubDomains; preload;
accept-ranges
bytes
content-length
16112
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
source-sans-pro-400-italic-latin.woff2
www.classcentral.com/fonts/source-sans-pro-hinted/
15 KB
15 KB
Font
General
Full URL
https://www.classcentral.com/fonts/source-sans-pro-hinted/source-sans-pro-400-italic-latin.woff2
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
29b561a8a01edc4acf52d1c4c763aa21a1b540bc020b92f8bbfaf656b53a02b0
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Origin
https://www.classcentral.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Thu, 15 Oct 2020 04:50:23 GMT
server
nginx
etag
"5f87d50f-3bb0"
x-frame-options
sameorigin
content-type
font/woff2
cache-control
max-age=31536000
strict-transport-security
max-age=31536000; includeSubDomains; preload;
accept-ranges
bytes
content-length
15280
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fbest-courses%2Fmini-banner-best-of-all-time.png
ccweb.imgix.net/
5 KB
5 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fbest-courses%2Fmini-banner-best-of-all-time.png?auto=format&blur=200&h=420&ixlib=php-3.3.1&px=16&s=d9866ee3df3a50272132b746506802ee
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
346db90cd3cc13a287484bd3ca1a2bd335c6f31ad6cc5e0b837624b395143a74
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Fri, 01 Jul 2022 15:57:03 GMT
server
imgix
age
3001511
vary
Accept, User-Agent
x-cache
HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
e06cb474ebb6b4b1deb556e88509f3811436c1b5
accept-ranges
bytes
content-length
5164
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10076-SJC, cache-fra19180-FRA
https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fbest-courses%2Fmini-banner-most-popular-of-all-time.png
ccweb.imgix.net/
5 KB
5 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fbest-courses%2Fmini-banner-most-popular-of-all-time.png?auto=format&blur=200&h=420&ixlib=php-3.3.1&px=16&s=6b9b3ca668420c3d807c332c51ee7f2c
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
4bda1a03e1bfaa032564d3e3284c672579b8690ae49a153879f9f82e83109e9b
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Wed, 29 Jun 2022 08:49:14 GMT
server
imgix
age
3199980
vary
Accept, User-Agent
x-cache
HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
013379c414cb234dbe441175602c47303bfd4c83
accept-ranges
bytes
content-length
5177
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10072-SJC, cache-fra19180-FRA
https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fcollections%2Fcollection-ivy-league-moocs-social.jpg
ccweb.imgix.net/
5 KB
5 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fcollections%2Fcollection-ivy-league-moocs-social.jpg?auto=format&blur=200&h=420&ixlib=php-3.3.1&px=16&s=0d3af0d0d31cdbdc684a726b330a759f
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
92c2dbe8df2db9aa9f1147ffaa3688b57e5ee64a16312bc854a21bfd4a8bff07
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Mon, 18 Jul 2022 08:54:00 GMT
server
imgix
age
1558094
vary
Accept, User-Agent
x-cache
HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
aa3639cbcc615765f1552e48c96b9454fa04a05a
accept-ranges
bytes
content-length
5359
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10057-SJC, cache-fra19180-FRA
https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fcollections%2Fcollection-coursera-free-courses.png
ccweb.imgix.net/
6 KB
6 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fcollections%2Fcollection-coursera-free-courses.png?auto=format&blur=200&h=420&ixlib=php-3.3.1&px=16&s=dbef6e5a11e80f652ab6a5ce5eb593b8
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
79d1f78cd490da82c97a81a47d8799cd8410b8c8fb213fb6af8d4ad151e12a9d
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Tue, 05 Jul 2022 09:43:33 GMT
server
imgix
age
2678321
vary
Accept, User-Agent
x-cache
HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
c8b0f3ac33cb25f335f4423668e7c4c0f8efe4d6
accept-ranges
bytes
content-length
5934
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10020-SJC, cache-fra19180-FRA
https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fcollections%2Fcollection-free-certificates.png
ccweb.imgix.net/
6 KB
6 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fcollections%2Fcollection-free-certificates.png?auto=format&blur=200&h=420&ixlib=php-3.3.1&px=16&s=f880669c2a69683d851d6be4ee71652e
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
cfbd62f70a1d671f766f6091eb2be30d7a9e0bef7786d60d173f5f3ea0307e68
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
age
6293692
x-cache
MISS, HIT, HIT
x-imgix-id
33e7ab109548e7ce24183f6b4ec91303f09b22ad
fastly-restarts
1
x-served-by
cache-sjc10073-SJC, cache-sjc10066-SJC, cache-fra19180-FRA
accept-ranges
bytes
last-modified
Tue, 24 May 2022 13:27:21 GMT
server
imgix
vary
Accept, User-Agent
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
content-length
5647
cross-origin-resource-policy
cross-origin
https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fcollections%2Fcollection-google-certs.png
ccweb.imgix.net/
5 KB
5 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fcollections%2Fcollection-google-certs.png?auto=format&blur=200&h=420&ixlib=php-3.3.1&px=16&s=0d0859ee6dce9cd586fcc06d2e5d34ec
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
0520c1b6ef000a2e6a9e23d9f09659a0304719f726d5f3cbd3092e1d992a7fae
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Tue, 28 Jun 2022 09:31:51 GMT
server
imgix
age
3283822
vary
Accept, User-Agent
x-cache
HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
2d5870016ff4e9f67026010bf65a29b8512e8578
accept-ranges
bytes
content-length
5158
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10041-SJC, cache-fra19180-FRA
https%3A%2F%2Fwww.classcentral.com%2Freport%2Fwp-content%2Fuploads%2F2022%2F05%2Fedx-role-in-2u-banner.png
ccweb.imgix.net/
17 KB
17 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fwww.classcentral.com%2Freport%2Fwp-content%2Fuploads%2F2022%2F05%2Fedx-role-in-2u-banner.png?auto=format&ixlib=php-3.3.1&s=6265fb37aaa3c40ce7a9b106dddd4a4d
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
5553d138319d0e7241f26172e4e686b1d4dfeb7a78cd08208aa058f19f916235
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Wed, 15 Jun 2022 07:47:30 GMT
server
imgix
age
4413284
vary
Accept, User-Agent
x-cache
MISS, HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
93576a706c5fc0a1f81c1f07037398e93251b108
accept-ranges
bytes
content-length
17372
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10081-SJC, cache-sjc10065-SJC, cache-fra19180-FRA
https%3A%2F%2Fwww.classcentral.com%2Fimages%2Flists%2Flist-empty.png
ccweb.imgix.net/
4 KB
4 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fwww.classcentral.com%2Fimages%2Flists%2Flist-empty.png?auto=format&ixlib=php-3.3.1&w=100&s=7005d0a45465e44b0327c67458186ec5
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
afeb17a5ecf6a5873a1b686dab9bfde0072f8aa265aaa6262443d9769e97c3c1
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Wed, 29 Jun 2022 14:08:06 GMT
server
imgix
age
3180848
vary
Accept, User-Agent
x-cache
HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
ca2625f772bf2041709fa0ff501dbd94e8d3d30b
accept-ranges
bytes
content-length
4005
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10030-SJC, cache-fra19180-FRA
https%3A%2F%2Fd3f1iyfxxz8i1e.cloudfront.net%2Fcourses%2Fcourse_image%2F41cee18110ab.jpg
ccweb.imgix.net/
585 B
713 B
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fd3f1iyfxxz8i1e.cloudfront.net%2Fcourses%2Fcourse_image%2F41cee18110ab.jpg?auto=format&blur=200&cs=strip&fit=16%3A9&h=140&ixlib=php-3.3.1&px=16&w=crop&s=914accc35c5898f3d869ee1457f3acec
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
0a5cb6b7c4da46bcccc021eb6d97382c4f4436e09df2c4f4dbcd74d7b1c32cdb
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Wed, 06 Jul 2022 14:50:34 GMT
server
imgix
age
2573500
vary
Accept, User-Agent
x-cache
HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
8fdca75192dd0ec52cab7c9a764824bc4425e0f3
accept-ranges
bytes
content-length
585
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10061-SJC, cache-fra19180-FRA
messages-intl-icu-en-yml.5bcee086d3abedaa6d05.js
www.classcentral.com/webpack/
8 KB
3 KB
Script
General
Full URL
https://www.classcentral.com/webpack/messages-intl-icu-en-yml.5bcee086d3abedaa6d05.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
7d8ba1d4db9024069c11b0572ef56793512f073374d6ccaa21dc335bf6c53877
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Wed, 15 Jun 2022 09:05:17 GMT
server
nginx
etag
W/"62a9a0cd-1fe9"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fillustrations%2Flearning-illustration-03.png
ccweb.imgix.net/
50 KB
51 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fwww.classcentral.com%2Fimages%2Fillustrations%2Flearning-illustration-03.png?auto=format&ixlib=php-3.3.1&w=750&s=4f3df34b697ddbfb32fcff942a865b24
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
5bfc16fc5012e0e6944c70946dcd6a78287a5d1cbd63744269f7a5e414059096
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Mon, 04 Jul 2022 13:27:54 GMT
server
imgix
age
2751260
vary
Accept, User-Agent
x-cache
HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
d3f302cec44dfd95f8afc01a98865116acf9c200
accept-ranges
bytes
content-length
51638
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10066-SJC, cache-fra19180-FRA
analytics.a8c5531a8304a6447ca3.js
www.classcentral.com/webpack/
31 KB
12 KB
Script
General
Full URL
https://www.classcentral.com/webpack/analytics.a8c5531a8304a6447ca3.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
ed9b843f86c47ec22618b1b714eef549ec0894594334c233f5e4ee3146842565
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Sat, 23 Jul 2022 07:08:50 GMT
server
nginx
etag
W/"62db9e82-7dc5"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
truncated
/
4 KB
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
7616bf22e7975daffcd6b19435cc348762101606b21180d558e9c20d31cae169

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
truncated
/
646 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
6e7fa3d2104ca2fa376040a7df5463f3d72cbd0ac492467118ed241a82c8dd2d

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
truncated
/
1 KB
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
0fa0f90af85952dea075db0a7425a02e9995dffea94c371056eeffcf4a945594

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
truncated
/
1 KB
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
a1265adce392dddad25c3896ad9fae0cc981ce7b25adcd2103c7277bc8fe655f

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
truncated
/
204 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
c0dbcfee3385b303f0aa7a978f4eec40b568e471402ef3af2fb6fe8cb5752efb

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
hqdefault.jpg
i.ytimg.com/vi/HtSuA80QTyo/
13 KB
13 KB
Image
General
Full URL
https://i.ytimg.com/vi/HtSuA80QTyo/hqdefault.jpg
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:810::2016 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
c771be2b7340362b9678d7abb545b1c88967b07ec1258c611cc16d98622e002a
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:29:25 GMT
x-content-type-options
nosniff
age
769
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
13122
x-xss-protection
0
server
sffe
etag
"0"
vary
Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
image/jpeg
cache-control
public, max-age=7200
accept-ranges
bytes
timing-allow-origin
*
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 05 Aug 2022 11:29:25 GMT
truncated
/
385 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
fad0f51092d8da342df342c436b62ede07e6b9e60c00e921e76c419a411151c6

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
truncated
/
162 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
b504d6cf4fa657bdd9309f46dcf7360ffb2c81556f477af26d43249939f485b1

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
truncated
/
231 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
1d1b185a6694a9a92daa2e428f3ac72ca111b01bafa5b20fa098680a7c37da34

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
truncated
/
227 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
cd64de356d2bd764472834c2e04815097a71f2e0f2351cbbe52bdadbc376c08a

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/svg+xml;charset=utf-8
collect
www.google-analytics.com/j/
2 B
210 B
XHR
General
Full URL
https://www.google-analytics.com/j/collect?v=1&_v=j96&aip=1&a=2134619691&t=pageview&_s=1&dl=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&ul=en-us&de=UTF-8&dt=Introduction%20to%20Algorithms%20(Fall%202011)%20%3E%201.%20Algorithmic%20Thinking%2C%20Peak%20Finding%7C%20Class%20Central%20Classroom&sd=24-bit&sr=1600x1200&vp=1600x1200&je=0&_u=YEBAAEABAAAAAC~&jid=478816208&gjid=1361206885&cid=1847209688.1659692534&tid=UA-27280844-1&_gid=80290724.1659692534&_r=1&_slc=1&z=2019083920
Requested by
Host: www.google-analytics.com
URL: https://www.google-analytics.com/analytics.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:813::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
a048e640908046be06e00eab37742b5d5ff80964af58cfd22f7cb2de4dfe375f
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

Referer
https://www.classcentral.com/
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36
Content-Type
text/plain

Response headers

pragma
no-cache
date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Sun, 17 May 1998 03:00:00 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://www.classcentral.com
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
2
expires
Fri, 01 Jan 1990 00:00:00 GMT
collect
region1.google-analytics.com/g/
0
350 B
Ping
General
Full URL
https://region1.google-analytics.com/g/collect?v=2&tid=G-C254RZPQ1X&gtm=2oe830&_p=2134619691&_z=ccd.v9B&cid=1847209688.1659692534&ul=en-us&sr=1600x1200&_eu=C&_s=1&sid=1659692534&sct=1&seg=0&dl=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&dt=Introduction%20to%20Algorithms%20(Fall%202011)%20%3E%201.%20Algorithmic%20Thinking%2C%20Peak%20Finding%7C%20Class%20Central%20Classroom&en=page_view&_fv=1&_ss=1&_ee=1
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-C254RZPQ1X
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2001:4860:4802:32::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

pragma
no-cache
date
Fri, 05 Aug 2022 09:42:14 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://www.classcentral.com
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
0
expires
Fri, 01 Jan 1990 00:00:00 GMT
collect
region1.google-analytics.com/g/
0
45 B
Ping
General
Full URL
https://region1.google-analytics.com/g/collect?v=2&tid=G-C254RZPQ1X&gtm=2oe830&_p=2134619691&_z=ccd.v9B&ul=en-us&sr=1600x1200&cid=1847209688.1659692534&_s=2&dl=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&dt=Introduction%20to%20Algorithms%20(Fall%202011)%20%3E%201.%20Algorithmic%20Thinking%2C%20Peak%20Finding%7C%20Class%20Central%20Classroom&sid=1659692534&sct=1&seg=0&en=visited_course&_c=1&_et=2
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-C254RZPQ1X
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2001:4860:4802:32::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

pragma
no-cache
date
Fri, 05 Aug 2022 09:42:14 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://www.classcentral.com
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
0
expires
Fri, 01 Jan 1990 00:00:00 GMT
ub0tz0cmeh
us-central1-class-central-prod.cloudfunctions.net/
35 B
76 B
XHR
General
Full URL
https://us-central1-class-central-prod.cloudfunctions.net/ub0tz0cmeh
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/webpack/analytics.a8c5531a8304a6447ca3.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2001:4860:4802:36::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Frontend / Express
Resource Hash
cea82cee03fc31e207a5a4995f20c68514a44f5837ca728622d09e065658ea83

Request headers

Accept
application/json, text/plain, */*
Referer
https://www.classcentral.com/
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36
Content-Type
application/json

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
server
Google Frontend
x-powered-by
Express
etag
W/"23-MUDYfUAoMSMnxMvcTuZVSkaWz9U"
vary
Origin
content-type
text/html; charset=utf-8
access-control-allow-origin
https://www.classcentral.com
x-cloud-trace-context
5528974878ed12a491537b5bf50efa32
cache-control
private
function-execution-id
twnu5y7vo48x
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
55
js
static.getclicky.com/
15 KB
6 KB
Script
General
Full URL
https://static.getclicky.com/js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_ECDSA, AES_128_GCM
Server
2606:4700::6810:a010 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
f164b7d1707684b6749eb2f5154c84883cb9ec621dca72fc5147772b3c4237ff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
Mon, 01 Aug 2022 16:07:16 GMT
server
cloudflare
age
322498
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary
Accept-Encoding, Accept-Encoding
content-type
text/javascript; charset=utf-8
access-control-allow-origin
*
expires
Mon, 08 Aug 2022 16:07:16 GMT
cache-control
max-age=604800
cf-ray
735e94e4dd0f9137-FRA
alt-svc
h3=":443"; ma=86400, h3-29=":443"; ma=86400
x-proxy-cache
HIT
ub0tz0cmeh
us-central1-class-central-prod.cloudfunctions.net/ Frame
0
0
Preflight
General
Full URL
https://us-central1-class-central-prod.cloudfunctions.net/ub0tz0cmeh
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2001:4860:4802:36::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Frontend / Express
Resource Hash

Request headers

Accept
*/*
Access-Control-Request-Headers
content-type
Access-Control-Request-Method
POST
Origin
https://www.classcentral.com
Sec-Fetch-Mode
cors
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

access-control-allow-headers
content-type
access-control-allow-methods
GET,HEAD,PUT,PATCH,POST,DELETE
access-control-allow-origin
https://www.classcentral.com
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
0
content-type
text/html
date
Fri, 05 Aug 2022 09:42:14 GMT
function-execution-id
twnuu3739k5g
server
Google Frontend
vary
Origin, Access-Control-Request-Headers
x-cloud-trace-context
5471bbd81a046c92c95568a708445226
x-powered-by
Express
2290.79a10fead4e4e7e3636e.js
www.classcentral.com/webpack/
30 KB
14 KB
Script
General
Full URL
https://www.classcentral.com/webpack/2290.79a10fead4e4e7e3636e.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
7205260eb0cf28dffe5aee5e0e92ee07085c1ac957483a114401e2edcbf2bc47
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Mon, 21 Feb 2022 04:21:05 GMT
server
nginx
etag
W/"62131331-7853"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
Auth.b53b0c0a48d53627e86d.js
www.classcentral.com/webpack/
32 KB
11 KB
Script
General
Full URL
https://www.classcentral.com/webpack/Auth.b53b0c0a48d53627e86d.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
cce81eab30bf64ec76541a0144773e2ed458cf2dbc9ce7c2c70de482d9af6db7
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Mon, 18 Jul 2022 05:09:41 GMT
server
nginx
etag
W/"62d4eb15-80a4"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
https%3A%2F%2Fd3f1iyfxxz8i1e.cloudfront.net%2Fcourses%2Fcourse_image%2F41cee18110ab.jpg
ccweb.imgix.net/
3 KB
3 KB
Image
General
Full URL
https://ccweb.imgix.net/https%3A%2F%2Fd3f1iyfxxz8i1e.cloudfront.net%2Fcourses%2Fcourse_image%2F41cee18110ab.jpg?auto=format&cs=strip&fit=16%3A9&h=140&ixlib=php-3.3.1&w=crop&s=71777fabd4c1529d0a1b4d411d0ce0b5
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
2a04:4e42:3::720 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
imgix /
Resource Hash
3fc7425bc2757e5eb10bea5eacfb4e5c3f563efcbe1ddc451d57aefa22f87033
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
x-content-type-options
nosniff
last-modified
Sat, 30 Jul 2022 14:57:53 GMT
server
imgix
age
499461
vary
Accept, User-Agent
x-cache
HIT, HIT
content-type
image/avif
access-control-allow-origin
*
cache-control
public, max-age=31536000
x-imgix-id
5ad0b1be61ce59fa0bc2fb77601ca3f84e037f15
accept-ranges
bytes
content-length
3045
cross-origin-resource-policy
cross-origin
x-served-by
cache-sjc10055-SJC, cache-fra19180-FRA
MarkComplete.5221fc9a7d97b6088435.js
www.classcentral.com/webpack/
22 KB
7 KB
Script
General
Full URL
https://www.classcentral.com/webpack/MarkComplete.5221fc9a7d97b6088435.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
c5c76315127d039e6132a459b7996aea478590188acb0b0bc9f138b2718b08d3
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Fri, 20 May 2022 01:26:53 GMT
server
nginx
etag
W/"6286ee5d-57c6"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
UserActions.e68eea4f65a6d0e0def1.js
www.classcentral.com/webpack/
31 KB
10 KB
Script
General
Full URL
https://www.classcentral.com/webpack/UserActions.e68eea4f65a6d0e0def1.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
9606ef344bad859ddd48db04eb3d0ccac6a7dee930f8457b810ff95dcc9a6f38
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Mon, 18 Jul 2022 05:09:41 GMT
server
nginx
etag
W/"62d4eb15-7d1f"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
Reviews.54b527ac257f1f369d19.js
www.classcentral.com/webpack/
8 KB
3 KB
Script
General
Full URL
https://www.classcentral.com/webpack/Reviews.54b527ac257f1f369d19.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
584acb8ebbec38e39778204a2c7907631a11bcd1b731d25d74a15bca62c57fb4
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Fri, 20 May 2022 01:26:53 GMT
server
nginx
etag
W/"6286ee5d-209b"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
4826.9474fcec4443aacad25f.js
www.classcentral.com/webpack/
39 KB
15 KB
Script
General
Full URL
https://www.classcentral.com/webpack/4826.9474fcec4443aacad25f.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
e632e15fbb0503d4f0372119eeebbce1e07a83a8d00f57457576ed9f544f9560
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Mon, 21 Feb 2022 04:21:05 GMT
server
nginx
etag
W/"62131331-9c31"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
Misc.a51c44847354b0b4da07.js
www.classcentral.com/webpack/
17 KB
6 KB
Script
General
Full URL
https://www.classcentral.com/webpack/Misc.a51c44847354b0b4da07.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
7c8c659ad50530e7f7f4c74757a4d4f73de154976f96e3b267892ab6a7f33405
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Fri, 20 May 2022 01:26:53 GMT
server
nginx
etag
W/"6286ee5d-432e"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
9974.1fefa1a8ed51efc65c2f.js
www.classcentral.com/webpack/
117 KB
40 KB
Script
General
Full URL
https://www.classcentral.com/webpack/9974.1fefa1a8ed51efc65c2f.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
04367815a71a2400e6107fc9316c69cccc03e82a7731ebb6a898446b81efdab5
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Mon, 21 Feb 2022 04:21:05 GMT
server
nginx
etag
W/"62131331-1d233"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
Classroom.75cef8f7b23a7e489b13.js
www.classcentral.com/webpack/
20 KB
7 KB
Script
General
Full URL
https://www.classcentral.com/webpack/Classroom.75cef8f7b23a7e489b13.js
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.68.4.21 Council Bluffs, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM, US),
Reverse DNS
21.4.68.34.bc.googleusercontent.com
Software
nginx /
Resource Hash
6f09e9412eb56b51cd6666b71013f4769889611b792a1fc9e6d1a695f6b090df
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/course/mit-opencourseware-introduction-to-algorithms-fall-2011-40936/classroom
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Sat, 23 Jul 2022 07:08:50 GMT
server
nginx
etag
W/"62db9e82-50ab"
x-frame-options
sameorigin
content-type
application/javascript
cache-control
max-age=31536000, public
strict-transport-security
max-age=31536000; includeSubDomains; preload;
vary
Accept-Encoding
x-xss-protection
1; mode=block
expires
Sat, 05 Aug 2023 09:42:14 GMT
in.php
in.getclicky.com/
222 B
401 B
Script
General
Full URL
https://in.getclicky.com/in.php?site_id=100717247&type=pageview&href=%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&title=Introduction%20to%20Algorithms%20(Fall%202011)%20%3E%201.%20Algorithmic%20Thinking%2C%20Peak%20Finding%7C%20Class%20Central%20Classroom&res=1600x1200&lang=en-US&tz=Etc%2FUnknown&tc=&ck=1&mime=js&x=0.11563284528797624
Requested by
Host: static.getclicky.com
URL: https://static.getclicky.com/js
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
198.145.13.14 Sherwood, United States, ASN2044 (DF-PTL01, US),
Reverse DNS
getclicky.com
Software
nginx /
Resource Hash
0dbfb147f6403b3f7ac4724cb6b5cc62cab2f8290b477ca4ba3b6bedfa424d96

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:15 GMT
content-encoding
gzip
server
nginx
vary
Accept-Encoding, Accept-Encoding
content-type
text/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
no-cache, must-revalidate, post-check=0, pre-check=0
expires
Mon, 26 Jul 1997 05:00:00 GMT
iframe_api
www.youtube.com/
980 B
2 KB
Script
General
Full URL
https://www.youtube.com/iframe_api
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/webpack/9974.1fefa1a8ed51efc65c2f.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
f7d647330ef8b48d3f3c4474cae466809967e6b17c95ff9a0ce4ba90679daf2c
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:14 GMT
content-encoding
br
x-content-type-options
nosniff
p3p
CP="This is not a P3P policy! See http://support.google.com/accounts/answer/151657?hl=de for more info."
critical-ch
Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
x-xss-protection
0
server
ESF
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000
report-to
{"group":"youtube_main","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube_main"}]}
content-type
text/javascript; charset=utf-8
accept-ch
Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
vary
Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
cache-control
private, max-age=0
permissions-policy
ch-ua-arch=*, ch-ua-bitness=*, ch-ua-full-version=*, ch-ua-full-version-list=*, ch-ua-model=*, ch-ua-platform=*, ch-ua-platform-version=*
cross-origin-opener-policy-report-only
same-origin; report-to="youtube_main"
expires
Fri, 05 Aug 2022 09:42:14 GMT
www-widgetapi.js
www.youtube.com/s/player/2fd212f2/www-widgetapi.vflset/
158 KB
51 KB
Script
General
Full URL
https://www.youtube.com/s/player/2fd212f2/www-widgetapi.vflset/www-widgetapi.js
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/iframe_api
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
7641b6626459a876451588bb7b10ed335864a772059289d20d974d27da3edd14
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 06:56:09 GMT
content-encoding
br
x-content-type-options
nosniff
age
9965
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
52536
x-xss-protection
0
last-modified
Thu, 04 Aug 2022 00:21:08 GMT
server
sffe
vary
Accept-Encoding, Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
text/javascript
cache-control
public, max-age=31536000
accept-ranges
bytes
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Sat, 05 Aug 2023 06:56:09 GMT
HtSuA80QTyo
www.youtube.com/embed/ Frame 6C13
64 KB
26 KB
Document
General
Full URL
https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/s/player/2fd212f2/www-widgetapi.vflset/www-widgetapi.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
4ca7abee119cf438d484f9b1659a34ee1630c4960d68543cec138572a38cf13b
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Referer
https://www.classcentral.com/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

accept-ch
Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
cache-control
no-cache, no-store, max-age=0, must-revalidate
content-encoding
br
content-type
text/html; charset=utf-8
critical-ch
Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
cross-origin-opener-policy-report-only
same-origin; report-to="youtube_main"
date
Fri, 05 Aug 2022 09:42:14 GMT
expires
Mon, 01 Jan 1990 00:00:00 GMT
p3p
CP="This is not a P3P policy! See g.co/p3phelp for more info."
permissions-policy
ch-ua-arch=*, ch-ua-bitness=*, ch-ua-full-version=*, ch-ua-full-version-list=*, ch-ua-model=*, ch-ua-platform=*, ch-ua-platform-version=*
pragma
no-cache
report-to
{"group":"youtube_main","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube_main"}]}
server
ESF
strict-transport-security
max-age=31536000
vary
Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
x-content-type-options
nosniff
x-xss-protection
0
maxresdefault.jpg
i.ytimg.com/vi/HtSuA80QTyo/
1 KB
1 KB
Image
General
Full URL
https://i.ytimg.com/vi/HtSuA80QTyo/maxresdefault.jpg
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:810::2016 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
20e9aab22032d85684d7d916a1013f7c577a132a5b10ea3fd3578e8d0b28a711
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:16 GMT
x-content-type-options
nosniff
server
sffe
vary
Origin
content-type
image/jpeg
cache-control
public, max-age=30
cross-origin-resource-policy
cross-origin
timing-allow-origin
*
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
1097
x-xss-protection
0
expires
Fri, 05 Aug 2022 09:42:46 GMT
www-player.css
www.youtube.com/s/player/2fd212f2/ Frame 6C13
340 KB
47 KB
Stylesheet
General
Full URL
https://www.youtube.com/s/player/2fd212f2/www-player.css
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
8af5b01db369432e13c4fc7fd732a09338294d39668f7dd3d4c0c063db3a18be
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Thu, 04 Aug 2022 14:56:09 GMT
content-encoding
br
x-content-type-options
nosniff
age
67565
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
47818
x-xss-protection
0
last-modified
Thu, 04 Aug 2022 00:21:08 GMT
server
sffe
vary
Accept-Encoding, Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
text/css
cache-control
public, max-age=31536000
accept-ranges
bytes
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 04 Aug 2023 14:56:09 GMT
www-embed-player.js
www.youtube.com/s/player/2fd212f2/www-embed-player.vflset/ Frame 6C13
307 KB
95 KB
Script
General
Full URL
https://www.youtube.com/s/player/2fd212f2/www-embed-player.vflset/www-embed-player.js
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
6dca9b0dc612135d3fca2be6909f6006c4953175cdc92389cbcaca2d11ab9f32
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Thu, 04 Aug 2022 14:56:09 GMT
content-encoding
br
x-content-type-options
nosniff
age
67565
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
97170
x-xss-protection
0
last-modified
Thu, 04 Aug 2022 00:21:08 GMT
server
sffe
vary
Accept-Encoding, Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
text/javascript
cache-control
public, max-age=31536000
accept-ranges
bytes
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 04 Aug 2023 14:56:09 GMT
base.js
www.youtube.com/s/player/2fd212f2/player_ias.vflset/de_DE/ Frame 6C13
2 MB
566 KB
Script
General
Full URL
https://www.youtube.com/s/player/2fd212f2/player_ias.vflset/de_DE/base.js
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
f611cb7e93381f8dbb6df1c62fe1c4c5b9f861a93a52f27c7de12a26b2e1b97e
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Thu, 04 Aug 2022 14:57:45 GMT
content-encoding
br
x-content-type-options
nosniff
age
67469
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
579287
x-xss-protection
0
last-modified
Thu, 04 Aug 2022 00:21:08 GMT
server
sffe
vary
Accept-Encoding, Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
text/javascript
cache-control
public, max-age=31536000
accept-ranges
bytes
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 04 Aug 2023 14:57:45 GMT
fetch-polyfill.js
www.youtube.com/s/player/2fd212f2/fetch-polyfill.vflset/ Frame 6C13
9 KB
3 KB
Script
General
Full URL
https://www.youtube.com/s/player/2fd212f2/fetch-polyfill.vflset/fetch-polyfill.js
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
498b3f2a0357fbd50a80eb18b23ab4b461b791d640e5560b799f08ed960748a9
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Thu, 04 Aug 2022 14:56:09 GMT
content-encoding
br
x-content-type-options
nosniff
age
67565
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
2786
x-xss-protection
0
last-modified
Thu, 04 Aug 2022 00:21:08 GMT
server
sffe
vary
Accept-Encoding, Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
text/javascript
cache-control
public, max-age=31536000
accept-ranges
bytes
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 04 Aug 2023 14:56:09 GMT
KFOmCnqEu92Fr1Mu4mxK.woff2
fonts.gstatic.com/s/roboto/v18/ Frame 6C13
15 KB
16 KB
Font
General
Full URL
https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu4mxK.woff2
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:802::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
3e253b66056519aa065b00a453bac37ac5ed8f3e6fe7b542e93a9dcdcc11d0bc
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Referer
https://www.youtube.com/
Origin
https://www.youtube.com
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Tue, 02 Aug 2022 17:06:41 GMT
x-content-type-options
nosniff
age
232534
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
15344
x-xss-protection
0
last-modified
Mon, 16 Oct 2017 17:32:55 GMT
server
sffe
report-to
{"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
content-type
font/woff2
access-control-allow-origin
*
cache-control
public, max-age=31536000
accept-ranges
bytes
timing-allow-origin
*
cross-origin-opener-policy-report-only
same-origin; report-to="apps-themes"
expires
Wed, 02 Aug 2023 17:06:41 GMT
id
googleads.g.doubleclick.net/pagead/ Frame 6C13
Redirect Chain
  • https://googleads.g.doubleclick.net/pagead/id
  • https://googleads.g.doubleclick.net/pagead/id?slf_rd=1
100 B
146 B
XHR
General
Full URL
https://googleads.g.doubleclick.net/pagead/id?slf_rd=1
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Protocol
H3
Server
2a00:1450:4001:827::2002 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
cafe /
Resource Hash
dda5ac9a02cbb87dbcc01055844b6db4b4514fae1033f0b7f3cc44ec8a7a0a65
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:15 GMT
content-encoding
gzip
x-content-type-options
nosniff
p3p
policyref="https://googleads.g.doubleclick.net/pagead/gcn_p3p_.xml", CP="CURa ADMa DEVa TAIo PSAo PSDo OUR IND UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"
cross-origin-resource-policy
cross-origin
content-disposition
attachment; filename="f.txt"
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
120
x-xss-protection
0
pragma
no-cache
server
cafe
content-type
application/json; charset=UTF-8
access-control-allow-origin
https://www.youtube.com
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
timing-allow-origin
*
expires
Fri, 01 Jan 1990 00:00:00 GMT

Redirect headers

date
Fri, 05 Aug 2022 09:42:15 GMT
x-content-type-options
nosniff
access-control-allow-origin
https://www.youtube.com
p3p
policyref="https://googleads.g.doubleclick.net/pagead/gcn_p3p_.xml", CP="CURa ADMa DEVa TAIo PSAo PSDo OUR IND UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
0
x-xss-protection
0
pragma
no-cache
server
cafe
content-type
text/html; charset=UTF-8
location
https://googleads.g.doubleclick.net/pagead/id?slf_rd=1
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
timing-allow-origin
*
expires
Fri, 01 Jan 1990 00:00:00 GMT
ad_status.js
static.doubleclick.net/instream/ Frame 6C13
29 B
588 B
Script
General
Full URL
https://static.doubleclick.net/instream/ad_status.js
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/s/player/2fd212f2/www-embed-player.vflset/www-embed-player.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:830::2006 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
eed0dc1fdb5d97ed188ae16fd5e1024a5bb744af47340346be2146300a6c54b9
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:34:42 GMT
x-content-type-options
nosniff
age
453
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
29
x-xss-protection
0
last-modified
Thu, 12 Dec 2013 23:40:16 GMT
server
sffe
report-to
{"group":"ads-doubleclick-media","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/ads-doubleclick-media"}]}
content-type
text/javascript
access-control-allow-origin
*
cache-control
public, max-age=900
accept-ranges
bytes
timing-allow-origin
*
cross-origin-opener-policy-report-only
same-origin; report-to="ads-doubleclick-media"
expires
Fri, 05 Aug 2022 09:49:42 GMT
Create
jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/ Frame
0
0
Preflight
General
Full URL
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/Create
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:829::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

Accept
*/*
Access-Control-Request-Headers
content-type,x-goog-api-key,x-user-agent
Access-Control-Request-Method
POST
Origin
https://www.youtube.com
Sec-Fetch-Mode
cors
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

access-control-allow-credentials
true
access-control-allow-headers
content-type,x-goog-api-key,x-user-agent
access-control-allow-methods
DELETE,GET,HEAD,OPTIONS,PATCH,POST,PUT
access-control-allow-origin
https://www.youtube.com
access-control-max-age
3600
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
0
content-type
text/html
date
Fri, 05 Aug 2022 09:42:15 GMT
server
ESF
vary
origin referer x-origin
x-content-type-options
nosniff
x-frame-options
SAMEORIGIN
x-xss-protection
0
Create
jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/ Frame 6C13
64 KB
30 KB
XHR
General
Full URL
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/Create
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/s/player/2fd212f2/player_ias.vflset/de_DE/base.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:829::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
8c8f24759769bbd54a636d7a6274ec744ea2a1f82b27dcc52e9b0421e387d769
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

X-User-Agent
grpc-web-javascript/0.1
Referer
https://www.youtube.com/
X-Goog-Api-Key
AIzaSyDyT5W0Jh49F30Pqqtyfdf7pDLFKLJoAnw
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36
Content-Type
application/json+protobuf

Response headers

date
Fri, 05 Aug 2022 09:42:15 GMT
content-encoding
gzip
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
server
ESF
x-frame-options
SAMEORIGIN
content-type
application/json+protobuf; charset=UTF-8
access-control-allow-origin
https://www.youtube.com
access-control-expose-headers
vary,vary,vary,content-encoding,date,server,content-length
cache-control
private
access-control-allow-credentials
true
vary
Origin, X-Origin, Referer
content-length
30424
x-xss-protection
0
VLtUh1pvvJIlV7o2u1P8ATawJj1ZguUBKxf18Dd-9zc.js
www.google.com/js/th/ Frame 6C13
36 KB
14 KB
Script
General
Full URL
https://www.google.com/js/th/VLtUh1pvvJIlV7o2u1P8ATawJj1ZguUBKxf18Dd-9zc.js
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/s/player/2fd212f2/player_ias.vflset/de_DE/base.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:806::2004 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
54bb54875a6fbc922557ba36bb53fc0136b0263d5982e5012b17f5f0377ef737
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Wed, 03 Aug 2022 05:03:53 GMT
content-encoding
br
x-content-type-options
nosniff
age
189502
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/botguard-scs
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
14059
x-xss-protection
0
last-modified
Tue, 19 Jul 2022 13:00:00 GMT
server
sffe
cross-origin-opener-policy
same-origin; report-to="botguard-scs"
vary
Accept-Encoding
report-to
{"group":"botguard-scs","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/botguard-scs"}]}
content-type
text/javascript
cache-control
public, max-age=31536000
accept-ranges
bytes
expires
Thu, 03 Aug 2023 05:03:53 GMT
embed.js
www.youtube.com/s/player/2fd212f2/player_ias.vflset/de_DE/ Frame 6C13
27 KB
8 KB
Script
General
Full URL
https://www.youtube.com/s/player/2fd212f2/player_ias.vflset/de_DE/embed.js
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/s/player/2fd212f2/player_ias.vflset/de_DE/base.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
bf4ef47f10dc67845744d92465e9dbbd6280b84e2b84dd7cf9c6b6b5211e8737
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Thu, 04 Aug 2022 14:57:46 GMT
content-encoding
br
x-content-type-options
nosniff
age
67469
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
8106
x-xss-protection
0
last-modified
Thu, 04 Aug 2022 00:21:08 GMT
server
sffe
vary
Accept-Encoding, Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
text/javascript
cache-control
public, max-age=31536000
accept-ranges
bytes
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 04 Aug 2023 14:57:46 GMT
truncated
/ Frame 6C13
175 B
0
Image
General
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
67ea46bc3d15351067faccb3613bd833dd3f15137a4b4a09f2e873fd41d024d2

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

Content-Type
image/png
AMLnZu_KqMKvr-9gA7MORv_n5HkVjP5jZajcS5D3zR7j=s68-c-k-c0x00ffffff-no-rj
yt3.ggpht.com/ytc/ Frame 6C13
2 KB
3 KB
Image
General
Full URL
https://yt3.ggpht.com/ytc/AMLnZu_KqMKvr-9gA7MORv_n5HkVjP5jZajcS5D3zR7j=s68-c-k-c0x00ffffff-no-rj
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:831::2001 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
fife /
Resource Hash
8dc71a5643ddbd1d9561f24dd372a5e13d9845f024fba1cae5518b3093053bc1
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 05:43:10 GMT
x-content-type-options
nosniff
age
14345
content-disposition
inline;filename="unnamed.jpg"
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
2498
x-xss-protection
0
server
fife
etag
"v25"
vary
Origin
content-type
image/jpeg
access-control-allow-origin
*
access-control-expose-headers
Content-Length
cache-control
public, max-age=86400, no-transform
timing-allow-origin
*
expires
Sat, 30 Jul 2022 08:47:17 GMT
sddefault.webp
i.ytimg.com/vi_webp/HtSuA80QTyo/ Frame 6C13
19 KB
19 KB
Image
General
Full URL
https://i.ytimg.com/vi_webp/HtSuA80QTyo/sddefault.webp
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:810::2016 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
1a178a60e96efd1abf73fd84646ead7727b7726e72e6ee55c4f7a3e95f0eded4
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:15 GMT
x-content-type-options
nosniff
server
sffe
etag
"0"
vary
Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
image/webp
cache-control
public, max-age=7200
cross-origin-resource-policy
cross-origin
accept-ranges
bytes
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
19494
x-xss-protection
0
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 05 Aug 2022 11:42:15 GMT
embed
noembed.com/
738 B
1019 B
XHR
General
Full URL
https://noembed.com/embed?url=https://www.youtube.com/watch?v=HtSuA80QTyo
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/webpack/9974.1fefa1a8ed51efc65c2f.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:4e42:400::347 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
28e4852c39d404970bb3fafd2c2f74e5ef15bff92f3b32e1ede342b2eaf71100

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:15 GMT
via
1.1 varnish, 1.1 varnish
age
13311
x-cache
HIT, HIT
content-type
text/javascript; charset=utf-8
access-control-allow-origin
*
x-cache-hits
1, 1
access-control-allow-methods
GET
accept-ranges
bytes
x-timer
S1659692535.231355,VS0,VE2
access-control-allow-headers
Origin, Accept, Content-Type
content-length
738
x-served-by
cache-chi-kigq8000156-CHI, cache-fra19139-FRA
generate_204
www.youtube.com/ Frame 6C13
0
9 B
Image
General
Full URL
https://www.youtube.com/generate_204?sikBIA
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
/
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:15 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
0
plyr.svg
cdn.plyr.io/3.6.12/
6 KB
3 KB
XHR
General
Full URL
https://cdn.plyr.io/3.6.12/plyr.svg
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/webpack/9974.1fefa1a8ed51efc65c2f.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:21::681b:c258 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
4846018760f6e11a8a1dea7639a5c75c712f198d978eccf117840820bb8c37d7

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:42:15 GMT
via
1.1 varnish, 1.1 varnish
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age
14275066
x-cache
HIT, HIT
access-control-allow-methods
GET, POST, OPTIONS
content-encoding
br
alt-svc
h3=":443"; ma=86400, h3-29=":443"; ma=86400
x-amz-request-id
HNN2SM8EZJ7XEX6C
x-amz-id-2
GDgjz2PMS4sGRWwWxeRjEExgHW/3j7RzvPYsNElmJTC9YZzgfy0o/gANIgxJ2rO4yke2p7KaGkU=
x-served-by
cache-iad-kjyo7100175-IAD, cache-lcy19238-LCY
last-modified
Thu, 16 Dec 2021 20:41:22 GMT
server
cloudflare
x-timer
S1645417470.943288,VS0,VE0
etag
W/"3a727a9b7eef825081d78cc6e48aaadf"
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=CQ6oeTjcrRr08SdCdV%2F9JVe0WnYOQZNcIk5oik%2FO2VvgcSdLII7m%2BA5YNg3OqMFWNG1zC2aYh9rMSu6Us8PVlYcEYo27U3I8TQxuxTLJbhRr%2BxQipica2sEbGBxsAn3YxIgWGo6UcH2o"}],"group":"cf-nel","max_age":604800}
content-type
image/svg+xml
access-control-allow-origin
*
access-control-expose-headers
Content-Range, Date, Cache-Control, Content-Type, Accept, Origin, Accept
cache-control
max-age=31536000, immutable
cf-ray
735e94e9fe968865-LHR
x-cache-hits
1, 3
GenerateIT
jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/ Frame 6C13
98 B
142 B
XHR
General
Full URL
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/s/player/2fd212f2/player_ias.vflset/de_DE/base.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:829::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
d9c931bb3485228163e4305d4a7684f0bfabefef3739547de81dc486292ff501
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

X-User-Agent
grpc-web-javascript/0.1
Referer
https://www.youtube.com/
X-Goog-Api-Key
AIzaSyDyT5W0Jh49F30Pqqtyfdf7pDLFKLJoAnw
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36
Content-Type
application/json+protobuf

Response headers

date
Fri, 05 Aug 2022 09:42:15 GMT
content-encoding
gzip
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
server
ESF
x-frame-options
SAMEORIGIN
content-type
application/json+protobuf; charset=UTF-8
access-control-allow-origin
https://www.youtube.com
access-control-expose-headers
vary,vary,vary,content-encoding,date,server,content-length
cache-control
private
access-control-allow-credentials
true
vary
Origin, X-Origin, Referer
content-length
118
x-xss-protection
0
GenerateIT
jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/ Frame
0
0
Preflight
General
Full URL
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:829::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

Accept
*/*
Access-Control-Request-Headers
content-type,x-goog-api-key,x-user-agent
Access-Control-Request-Method
POST
Origin
https://www.youtube.com
Sec-Fetch-Mode
cors
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

access-control-allow-credentials
true
access-control-allow-headers
content-type,x-goog-api-key,x-user-agent
access-control-allow-methods
DELETE,GET,HEAD,OPTIONS,PATCH,POST,PUT
access-control-allow-origin
https://www.youtube.com
access-control-max-age
3600
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
0
content-type
text/html
date
Fri, 05 Aug 2022 09:42:15 GMT
server
ESF
vary
origin referer x-origin
x-content-type-options
nosniff
x-frame-options
SAMEORIGIN
x-xss-protection
0
sddefault.jpg
i.ytimg.com/vi/HtSuA80QTyo/
27 KB
27 KB
Image
General
Full URL
https://i.ytimg.com/vi/HtSuA80QTyo/sddefault.jpg
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:810::2016 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
e84ba028ee7088609798e5d9bb5754be91eb220be868b4f6230d3dcc2731bf20
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:20:30 GMT
x-content-type-options
nosniff
age
1306
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
27652
x-xss-protection
0
server
sffe
etag
"0"
vary
Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
image/jpeg
cache-control
public, max-age=7200
accept-ranges
bytes
timing-allow-origin
*
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 05 Aug 2022 11:20:30 GMT
sddefault.jpg
i.ytimg.com/vi/HtSuA80QTyo/
27 KB
27 KB
Image
General
Full URL
https://i.ytimg.com/vi/HtSuA80QTyo/sddefault.jpg
Requested by
Host: www.classcentral.com
URL: https://www.classcentral.com/webpack/9974.1fefa1a8ed51efc65c2f.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:810::2016 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
e84ba028ee7088609798e5d9bb5754be91eb220be868b4f6230d3dcc2731bf20
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:20:30 GMT
x-content-type-options
nosniff
age
1306
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
27652
x-xss-protection
0
server
sffe
etag
"0"
vary
Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
image/jpeg
cache-control
public, max-age=7200
accept-ranges
bytes
timing-allow-origin
*
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 05 Aug 2022 11:20:30 GMT
sddefault.jpg
i.ytimg.com/vi/HtSuA80QTyo/
27 KB
27 KB
Image
General
Full URL
https://i.ytimg.com/vi/HtSuA80QTyo/sddefault.jpg
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:810::2016 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
sffe /
Resource Hash
e84ba028ee7088609798e5d9bb5754be91eb220be868b4f6230d3dcc2731bf20
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://www.classcentral.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Response headers

date
Fri, 05 Aug 2022 09:20:30 GMT
x-content-type-options
nosniff
age
1306
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
27652
x-xss-protection
0
server
sffe
etag
"0"
vary
Origin
report-to
{"group":"youtube","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/youtube"}]}
content-type
image/jpeg
cache-control
public, max-age=7200
accept-ranges
bytes
timing-allow-origin
*
cross-origin-opener-policy-report-only
same-origin; report-to="youtube"
expires
Fri, 05 Aug 2022 11:20:30 GMT
log_event
www.youtube.com/youtubei/v1/ Frame 6C13
28 B
54 B
XHR
General
Full URL
https://www.youtube.com/youtubei/v1/log_event?alt=json&key=AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8
Requested by
Host: www.youtube.com
URL: https://www.youtube.com/s/player/2fd212f2/www-embed-player.vflset/www-embed-player.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:827::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
scaffolding on HTTPServer2 /
Resource Hash
d7d5e54ad1e33d7ab49c664323ced79cb9723ff15e9764cd0edc3e15208e8336
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36
Content-Type
application/json
X-YouTube-Utc-Offset
0
X-YouTube-Client-Name
56
Referer
https://www.youtube.com/embed/HtSuA80QTyo?autoplay=0&controls=0&disablekb=1&playsinline=1&cc_load_policy=0&cc_lang_pref=auto&widget_referrer=https%3A%2F%2Fwww.classcentral.com%2Fcourse%2Fmit-opencourseware-introduction-to-algorithms-fall-2011-40936%2Fclassroom&rel=0&showinfo=0&iv_load_policy=3&modestbranding=1&customControls=true&noCookie=false&fs=1&enablejsapi=1&origin=https%3A%2F%2Fwww.classcentral.com&widgetid=1
X-YouTube-Client-Version
1.20220803.01.00
X-YouTube-Time-Zone
Etc/Unknown
X-Goog-Visitor-Id
CgtHcGlSUDhTS0V1TSj2y7OXBg%3D%3D
X-YouTube-Ad-Signals
dt=1659692535020&flash=0&frm=2&u_tz&u_his=2&u_h=1200&u_w=1600&u_ah=1200&u_aw=1600&u_cd=24&bc=31&bih=-12245933&biw=-12245933&brdim=0%2C0%2C0%2C0%2C1600%2C0%2C1600%2C1200%2C940%2C529&vis=1&wgl=true&ca_type=image

Response headers

date
Fri, 05 Aug 2022 09:42:17 GMT
content-encoding
br
x-content-type-options
nosniff
server
scaffolding on HTTPServer2
x-frame-options
SAMEORIGIN
vary
Origin, X-Origin, Referer
p3p
CP="This is not a P3P policy! See g.co/p3phelp for more info."
cache-control
private
content-type
application/json; charset=UTF-8
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length
31
x-xss-protection
0
expires
Fri, 05 Aug 2022 09:42:17 GMT

Verdicts & Comments Add Verdict or Comment

65 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

object| 0 object| oncontextlost object| oncontextrestored function| structuredClone object| launchQueue object| onbeforematch function| getScreenDetails function| queryLocalFonts object| navigation number| user_logged_in function| gtag object| dataLayer function| recordOutboundLink function| recordOutboundLinkWithoutRedirect function| recordInboundLink function| recordTaglineClicks string| GoogleAnalyticsObject function| ga object| CC boolean| TOUCHSCREEN string| EXTRACT_URL object| webpackChunk object| regeneratorRuntime object| google_tag_data object| gaplugins object| gaGlobal object| gaData object| google_tag_manager function| onYouTubeIframeAPIReady function| Analytics object| clicky_site_ids object| clicky_obj object| clicky object| clicky_custom undefined| test object| _cgen object| _cgen_custom function| sprintf function| vsprintf object| scriptUrl object| ttPolicy object| YT object| YTConfig function| onYTReady object| yt function| ytDomDomGetNextId object| ytEventsEventsListeners object| ytEventsEventsCounter object| ytglobal object| ytPubsub2Pubsub2Instance object| ytPubsub2Pubsub2SubscribedKeys object| ytPubsub2Pubsub2TopicToKeys object| ytPubsub2Pubsub2IsAsync object| ytPubsub2Pubsub2SkipSubKey object| ytNetworklessLoggingInitializationOptions object| ytPubsubPubsubInstance object| ytPubsubPubsubTopicToKeys object| ytPubsubPubsubIsSynchronous object| ytPubsubPubsubSubscribedKeys object| ytLoggingTransportGELQueue_ object| ytLoggingTransportGELProtoQueue_ object| ytLoggingTransportTokensToCttTargetIds_ object| ytLoggingTransportTokensToJspbCttTargetIds_ object| ytLoggingGelSequenceIdObj_ string| _heatmaps_g2g_100717247

11 Cookies

Domain/Path Name / Value
.bit.ly/ Name: _bit
Value: m759Gd-1e78fb3983c1d3ebaf-002
www.classcentral.com/ Name: PHPSESSID
Value: 4m5rp10vafj5k6spfds89463a0
.classcentral.com/ Name: _gid
Value: GA1.2.80290724.1659692534
.classcentral.com/ Name: _gat
Value: 1
.classcentral.com/ Name: _ga_C254RZPQ1X
Value: GS1.1.1659692534.1.0.1659692534.0
.classcentral.com/ Name: _ga
Value: GA1.1.1847209688.1659692534
www.classcentral.com/ Name: permanentId
Value: 7c5baae5-5df2-4ee3-9bc2-1e1b27f39ffd
.youtube.com/ Name: YSC
Value: FsV1DhSIySM
.youtube.com/ Name: VISITOR_INFO1_LIVE
Value: GpiRP8SKEuM
.classcentral.com/ Name: _jsuid
Value: 2410433938
.classcentral.com/ Name: _heatmaps_g2g_100717247
Value: yes

2 Console Messages

Source Level URL
Text
network error URL: https://us-central1-class-central-prod.cloudfunctions.net/ub0tz0cmeh
Message:
Failed to load resource: the server responded with a status of 403 ()
network error URL: https://i.ytimg.com/vi/HtSuA80QTyo/maxresdefault.jpg
Message:
Failed to load resource: the server responded with a status of 404 ()

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload;
X-Content-Type-Options nosniff
X-Frame-Options sameorigin
X-Xss-Protection 1; mode=block

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

bit.ly
ccweb.imgix.net
cdn.plyr.io
fonts.gstatic.com
googleads.g.doubleclick.net
i.ytimg.com
in.getclicky.com
jnn-pa.googleapis.com
noembed.com
region1.google-analytics.com
static.doubleclick.net
static.getclicky.com
us-central1-class-central-prod.cloudfunctions.net
www.classcentral.com
www.google-analytics.com
www.google.com
www.googletagmanager.com
www.youtube.com
yt3.ggpht.com
198.145.13.14
2001:4860:4802:32::36
2001:4860:4802:36::36
2606:4700:21::681b:c258
2606:4700::6810:a010
2a00:1450:4001:802::2003
2a00:1450:4001:806::2004
2a00:1450:4001:810::2016
2a00:1450:4001:813::200e
2a00:1450:4001:827::2002
2a00:1450:4001:827::200e
2a00:1450:4001:829::200a
2a00:1450:4001:82a::2008
2a00:1450:4001:830::2006
2a00:1450:4001:831::2001
2a04:4e42:3::720
2a04:4e42:400::347
34.68.4.21
67.199.248.10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