cs61a.org Open in urlscan Pro
104.199.121.146 Public Scan

Go To Rescan
Add Verdict Report

Submitted URL:
https://secure-internal-links.app.cs61a.org/
Effective URL:
https://cs61a.org/
Submission: On August 26 via automatic, source certstream-suspicious (August 26th 2020, 12:02:53 am UTC)

Summary HTTP 18 Redirects Links 30 Behaviour Indicators

Summary

This website contacted 6 IPs in 2 countries across 4 domains to perform 18 HTTP transactions. The main IP is 104.199.121.146, located in Mountain View, United States and belongs to GOOGLE, US. The main domain is cs61a.org.
TLS certificate: Issued by Let's Encrypt Authority X3 on August 7th 2020. Valid for: 3 months.

This is the only time cs61a.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
1 1	104.197.97.139 104.197.97.139	15169 (GOOGLE) (GOOGLE)
9	104.199.121.146 104.199.121.146	15169 (GOOGLE) (GOOGLE)
3	2606:4700::68... 2606:4700::6811:4e6b	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1	2a00:1450:400... 2a00:1450:4001:817::200a	15169 (GOOGLE) (GOOGLE)
3	2a00:1450:400... 2a00:1450:4001:81a::2003	15169 (GOOGLE) (GOOGLE)
1	2a00:1450:400... 2a00:1450:4001:81b::2003	15169 (GOOGLE) (GOOGLE)
1	2606:4700::68... 2606:4700::6811:4f6b	13335 (CLOUDFLAR...) (CLOUDFLARENET)
18	6

1 104.197.97.139 (United States) 1 redirects

ASN15169 (GOOGLE, US)
PTR: 139.97.197.104.bc.googleusercontent.com

secure-internal-links.app.cs61a.org	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

9 104.199.121.146 (Mountain View, United States)

ASN15169 (GOOGLE, US)
PTR: 146.121.199.104.bc.googleusercontent.com

cs61a.org	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 2606:4700::6811:4e6b (United States)

ASN13335 (CLOUDFLARENET, US)

cdnjs.cloudflare.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:817::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

fonts.googleapis.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 2a00:1450:4001:81a::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

fonts.gstatic.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:81b::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

fonts.gstatic.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2606:4700::6811:4f6b (United States)

ASN13335 (CLOUDFLARENET, US)

cdnjs.cloudflare.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
10	cs61a.org 1 redirects secure-internal-links.app.cs61a.org cs61a.org	28 KB
4	gstatic.com fonts.gstatic.com	77 KB
4	cloudflare.com cdnjs.cloudflare.com	69 KB
1	googleapis.com fonts.googleapis.com	1 KB
18	4

	Domain	Requested by
9	cs61a.org	cs61a.org
4	fonts.gstatic.com	fonts.googleapis.com
4	cdnjs.cloudflare.com	cs61a.org cdnjs.cloudflare.com
1	fonts.googleapis.com	cs61a.org
1	secure-internal-links.app.cs61a.org	1 redirects
18	5

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

Domain
piazza.com
denero.org
code.cs61a.org
tutor.cs61a.org
berkeley.zoom.us
inst.eecs.berkeley.edu
bit.ly
composingprograms.com

Subject Issuer	Validity	Valid
cs61a.org Let's Encrypt Authority X3	`2020-08-07` - `2020-11-05`	3 months	crt.sh
cdnjs.cloudflare.com DigiCert ECC Secure Server CA	`2020-08-12` - `2022-08-17`	2 years	crt.sh
upload.video.google.com GTS CA 1O1	`2020-08-11` - `2020-11-03`	3 months	crt.sh
*.gstatic.com GTS CA 1O1	`2020-08-11` - `2020-11-03`	3 months	crt.sh

This page contains 1 frames:

Primary Page: https://cs61a.org/
Frame ID: 57A9DE5692A81ED50B9815CD706AC4BC
Requests: 18 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page URL History Show full URLs

https://secure-internal-links.app.cs61a.org/ HTTP 302
https://cs61a.org/ Page URL

Detected technologies

Go (Programming Languages) Expand

Overall confidence: 100%
Detected patterns

headers server /^Caddy$/i

Caddy (Web Servers) Expand

Overall confidence: 100%
Detected patterns

headers server /^Caddy$/i

Page Statistics

18
Requests

100 %
HTTPS

71 %
IPv6

4
Domains

5
Subdomains

6
IPs

2
Countries

175 kB
Transfer

422 kB
Size

0
Cookies

30 Outgoing links

These are links going to different origins than the main page.

URL: https://piazza.com/berkeley/fall2020/cs61a
Title: Piazza

Search URL Search Domain Scan URL

URL: https://denero.org/feedback.html
Title: Feedback

Search URL Search Domain Scan URL

URL: https://code.cs61a.org/
Title: Code

Search URL Search Domain Scan URL

URL: http://tutor.cs61a.org/
Title: Tutor

Search URL Search Domain Scan URL

URL: https://berkeley.zoom.us/j/95887136397?pwd=UXQ0RmlpaVI5ZEdseWlkQXVTdE5odz09
Title: Zoom

Search URL Search Domain Scan URL

URL: https://inst.eecs.berkeley.edu/~cs61a/su20/
Title: inst.eecs.berkeley.edu/~cs61a/su20/

Search URL Search Domain Scan URL

URL: https://bit.ly/denerozoom
Title: Zoom for lecture Q&A with the instructors Friday @ 9:10am

Search URL Search Domain Scan URL

URL: https://code.cs61a.org/fa20/01.py
Title: 01.py

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/11-getting-started.html
Title: Ch. 1.1

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/12-elements-of-programming.html
Title: Ch. 1.2

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/13-defining-new-functions.html
Title: Ch. 1.3

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/14-designing-functions.html
Title: Ch. 1.4

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/15-control.html
Title: Ch. 1.5

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/16-higher-order-functions.html
Title: Ch. 1.6

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/17-recursive-functions.html
Title: Ch. 1.7

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/21-introduction.html
Title: Ch. 2.1

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/23-sequences.html
Title: Ch. 2.3

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/22-data-abstraction.html
Title: Ch. 2.2

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/24-mutable-data.html
Title: Ch. 2.4

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/42-implicit-sequences.html
Title: Ch. 4.2

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/25-object-oriented-programming.html
Title: Ch. 2.5

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/27-object-abstraction.html
Title: Ch. 2.7

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/29-recursive-objects.html
Title: Ch. 2.9

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/28-efficiency.html
Title: Ch. 2.8

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/31-introduction.html
Title: Ch. 3.1

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/32-functional-programming.html
Title: Ch. 3.2

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/33-exceptions.html
Title: Ch. 3.3

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/34-interpreters-for-languages-with-combination.html
Title: Ch. 3.4

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/35-interpreters-for-languages-with-abstraction.html
Title: Ch. 3.5

Search URL Search Domain Scan URL

URL: http://composingprograms.com/pages/43-declarative-programming.html
Title: Ch. 4.3

Search URL Search Domain Scan URL

Page URL History

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

https://secure-internal-links.app.cs61a.org/ HTTP 302
https://cs61a.org/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

18 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2

200

Primary Request / Show response
cs61a.org/
Redirect Chain

https://secure-internal-links.app.cs61a.org/
https://cs61a.org/

28 KB
6 KB

575ms
191ms

Document
text/html

104.199.121.146
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://cs61a.org/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.199.121.146 Mountain View, United States, ASN15169 (GOOGLE, US),
Reverse DNS: 146.121.199.104.bc.googleusercontent.com
Software: Caddy /
Resource Hash: 88d3bce76f26224fff7a01f682747e49f25ae9096dbb592dc2ec4a593042ea2e

Request headers

:method: GET
:authority: cs61a.org
:scheme: https
:path: /
pragma: no-cache
cache-control: no-cache
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36
accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
sec-fetch-site: none
sec-fetch-mode: navigate
sec-fetch-user: ?1
sec-fetch-dest: document
accept-encoding: gzip, deflate, br
accept-language: en-US
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

status: 200
content-encoding: gzip
content-type: text/html; charset=utf-8
etag: "qfmzfemem"
last-modified: Tue, 25 Aug 2020 20:26:02 GMT
server: Caddy
vary: Accept-Encoding
date: Wed, 26 Aug 2020 00:02:35 GMT

Redirect headers

Server: nginx
Date: Wed, 26 Aug 2020 00:02:35 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 241
Connection: keep-alive
Location: https://cs61a.org

GET
H2 200 jquery.min.js Show response
cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/ 84 KB
26 KB 14ms
11ms Script
application/javascript 2606:4700::6811:4e6b
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js

Requested by

Host: cs61a.org
URL: https://cs61a.org/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700::6811:4e6b , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

05b85d96f41fff14d8f608dad03ab71e2c1017c2da0914d7c59291bad7a54f8e

Security Headers

Name	Value
Strict-Transport-Security	max-age=15780000; includeSubDomains

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:35 GMT
content-encoding: br
vary: Accept-Encoding
cf-cache-status: HIT
age: 99643
x-via: cfworker/kv
status: 200
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400
content-length: 26909
cf-request-id: 04c9abe81f000006100f230200000001
timing-allow-origin: *
last-modified: Mon, 04 May 2020 16:11:48 GMT
server: cloudflare
etag: "5eb03ec4-14e4a"
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
strict-transport-security: max-age=15780000; includeSubDomains
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=30672000
accept-ranges: bytes
cf-ray: 5c8948ecf8560610-FRA
expires: Mon, 16 Aug 2021 00:02:35 GMT

GET
H2 200 bootstrap.min.js Show response
cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/ 36 KB
9 KB 15ms
12ms Script
application/javascript 2606:4700::6811:4e6b
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js

Requested by

Host: cs61a.org
URL: https://cs61a.org/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700::6811:4e6b , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

53964478a7c634e8dad34ecc303dd8048d00dce4993906de1bacf67f663486ef

Security Headers

Name	Value
Strict-Transport-Security	max-age=15780000; includeSubDomains

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:35 GMT
content-encoding: br
vary: Accept-Encoding
cf-cache-status: HIT
age: 99627
x-via: cfworker/kv
status: 200
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400
content-length: 8722
cf-request-id: 04c9abe81f000006100f231200000001
timing-allow-origin: *
last-modified: Mon, 04 May 2020 16:17:20 GMT
server: cloudflare
etag: "5eb04010-90b5"
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
strict-transport-security: max-age=15780000; includeSubDomains
content-type: application/javascript; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=30672000
accept-ranges: bytes
cf-ray: 5c8948ecf8590610-FRA
expires: Mon, 16 Aug 2021 00:02:35 GMT

GET
H2 200 hl.js Show response
cs61a.org/assets/js/ 27 KB
12 KB 360ms
357ms Script
application/javascript 104.199.121.146
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://cs61a.org/assets/js/hl.js
Requested by: Host: cs61a.org
URL: https://cs61a.org/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.199.121.146 Mountain View, United States, ASN15169 (GOOGLE, US),
Reverse DNS: 146.121.199.104.bc.googleusercontent.com
Software: Caddy /
Resource Hash: 98dad67fe954223a5750512f969fb65436f8361fb65b80bdce385429836b113f

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:35 GMT
content-encoding: gzip
last-modified: Tue, 25 Aug 2020 20:25:35 GMT
server: Caddy
etag: "qfmzenlfv"
vary: Accept-Encoding
content-type: application/javascript
status: 200

GET
H2 200 dark-mode.js Show response
cs61a.org/assets/js/ 3 KB
1 KB 359ms
356ms Script
application/javascript 104.199.121.146
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://cs61a.org/assets/js/dark-mode.js
Requested by: Host: cs61a.org
URL: https://cs61a.org/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.199.121.146 Mountain View, United States, ASN15169 (GOOGLE, US),
Reverse DNS: 146.121.199.104.bc.googleusercontent.com
Software: Caddy /
Resource Hash: 9d004484a7c5fbf6e220d223f58de0adb56a0613923d1611b7714da825b77d98

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:35 GMT
content-encoding: gzip
last-modified: Tue, 25 Aug 2020 20:25:35 GMT
server: Caddy
etag: "qfmzen2a5"
vary: Accept-Encoding
content-type: application/javascript
status: 200
content-length: 1233

GET
H2 200 bootstrap.min.css
cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/ 118 KB
16 KB 12ms
10ms Stylesheet
text/css 2606:4700::6811:4e6b
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css

Requested by

Host: cs61a.org
URL: https://cs61a.org/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700::6811:4e6b , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

f75e846cc83bd11432f4b1e21a45f31bc85283d11d372f7b19accd1bf6a2635c

Security Headers

Name	Value
Strict-Transport-Security	max-age=15780000; includeSubDomains

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:35 GMT
content-encoding: br
vary: Accept-Encoding
cf-cache-status: HIT
age: 99924
x-via: cfworker/kv
status: 200
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400
content-length: 16149
cf-request-id: 04c9abe81f000006100f22f200000001
timing-allow-origin: *
last-modified: Mon, 04 May 2020 16:17:20 GMT
server: cloudflare
etag: "5eb04010-1d970"
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
strict-transport-security: max-age=15780000; includeSubDomains
content-type: text/css; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=30672000
accept-ranges: bytes
cf-ray: 5c8948ecf8550610-FRA
expires: Mon, 16 Aug 2021 00:02:35 GMT

GET
H2 200 css
fonts.googleapis.com/ 10 KB
1 KB 17ms
15ms Stylesheet
text/css 2a00:1450:4001:817::200a
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700

Requested by

Host: cs61a.org
URL: https://cs61a.org/

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:817::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

ESF /

Resource Hash

64e4252e13bf153de09f95808733daa623ae03e4d17c762953228001762b0ff8

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

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

strict-transport-security: max-age=31536000
content-encoding: gzip
x-content-type-options: nosniff
status: 200
alt-svc: h3-29=":443"; ma=2592000,h3-27=":443"; ma=2592000,h3-T050=":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
last-modified: Wed, 26 Aug 2020 00:02:35 GMT
server: ESF
date: Wed, 26 Aug 2020 00:02:35 GMT
x-frame-options: SAMEORIGIN
content-type: text/css; charset=utf-8
access-control-allow-origin: *
cache-control: private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin: *
link: <https://fonts.gstatic.com>; rel=preconnect; crossorigin
expires: Wed, 26 Aug 2020 00:02:35 GMT

GET
H2 200 style.css
cs61a.org/assets/css/ 12 KB
3 KB 196ms
195ms Stylesheet
text/css 104.199.121.146
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://cs61a.org/assets/css/style.css
Requested by: Host: cs61a.org
URL: https://cs61a.org/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.199.121.146 Mountain View, United States, ASN15169 (GOOGLE, US),
Reverse DNS: 146.121.199.104.bc.googleusercontent.com
Software: Caddy /
Resource Hash: db7c8c06f931817a56ab46ff4542faa02573afa43c367513747836050f69ee8d

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:35 GMT
content-encoding: gzip
last-modified: Tue, 25 Aug 2020 20:26:00 GMT
server: Caddy
etag: "qfmzfc94r"
vary: Accept-Encoding
content-type: text/css; charset=utf-8
status: 200
content-length: 3104

GET
H2 200 mono-blue.css
cs61a.org/assets/css/ 965 B
500 B 357ms
356ms Stylesheet
text/css 104.199.121.146
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://cs61a.org/assets/css/mono-blue.css
Requested by: Host: cs61a.org
URL: https://cs61a.org/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.199.121.146 Mountain View, United States, ASN15169 (GOOGLE, US),
Reverse DNS: 146.121.199.104.bc.googleusercontent.com
Software: Caddy /
Resource Hash: 266d6e08879cb16ed3fcb8c1502e0fbb65e02bc71f3f635815502632e4f3bcee

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:35 GMT
content-encoding: gzip
last-modified: Tue, 25 Aug 2020 20:26:00 GMT
server: Caddy
etag: "qfmzfcqt"
vary: Accept-Encoding
content-type: text/css; charset=utf-8
status: 200
content-length: 459

GET
H2 200 logo.png
cs61a.org/assets/images/ 4 KB
3 KB 191ms
190ms Image
image/png 104.199.121.146
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://cs61a.org/assets/images/logo.png
Requested by: Host: cs61a.org
URL: https://cs61a.org/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.199.121.146 Mountain View, United States, ASN15169 (GOOGLE, US),
Reverse DNS: 146.121.199.104.bc.googleusercontent.com
Software: Caddy /
Resource Hash: bba578b63627c66fe633c19555b95759ba3340bfa22367f5ea1d9f327609bf15

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:36 GMT
content-encoding: gzip
last-modified: Tue, 25 Aug 2020 20:25:35 GMT
server: Caddy
etag: "qfmzen2yc"
vary: Accept-Encoding
content-type: image/png
status: 200
content-length: 3238

GET
H2 200 searchbox.css
cs61a.org/assets/css/ 284 B
346 B 191ms
190ms Stylesheet
text/css 104.199.121.146
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://cs61a.org/assets/css/searchbox.css
Requested by: Host: cs61a.org
URL: https://cs61a.org/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.199.121.146 Mountain View, United States, ASN15169 (GOOGLE, US),
Reverse DNS: 146.121.199.104.bc.googleusercontent.com
Software: Caddy /
Resource Hash: 11b63d779c6064938baa28a5d28c38c00bd99f8607af6a301ce765fe8ed61664

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

status: 200
date: Wed, 26 Aug 2020 00:02:36 GMT
last-modified: Tue, 25 Aug 2020 20:26:00 GMT
server: Caddy
etag: "qfmzfc7w"
content-length: 284
content-type: text/css; charset=utf-8

GET
H2 200 searchbox.js Show response
cs61a.org/assets/js/ 4 KB
1 KB 191ms
190ms Script
application/javascript 104.199.121.146
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://cs61a.org/assets/js/searchbox.js
Requested by: Host: cs61a.org
URL: https://cs61a.org/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.199.121.146 Mountain View, United States, ASN15169 (GOOGLE, US),
Reverse DNS: 146.121.199.104.bc.googleusercontent.com
Software: Caddy /
Resource Hash: e2bbd2b09abefa32cde1cb71b2a53ffcd76dc5dda133604306ea55369a71bb2e

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:36 GMT
content-encoding: gzip
last-modified: Tue, 25 Aug 2020 20:25:35 GMT
server: Caddy
etag: "qfmzen3am"
vary: Accept-Encoding
content-type: application/javascript
status: 200
content-length: 1435

GET
H2 200 KFOmCnqEu92Fr1Mu4mxKKTU1Kg.woff2
fonts.gstatic.com/s/roboto/v20/ 11 KB
11 KB 6ms
5ms Font
font/woff2 2a00:1450:4001:81a::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/roboto/v20/KFOmCnqEu92Fr1Mu4mxKKTU1Kg.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:81a::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Origin: https://cs61a.org
Referer: https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Mon, 24 Aug 2020 09:03:54 GMT
x-content-type-options: nosniff
last-modified: Wed, 24 Jul 2019 01:18:50 GMT
server: sffe
age: 140322
status: 200
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000
accept-ranges: bytes
timing-allow-origin: *
alt-svc: h3-29=":443"; ma=2592000,h3-27=":443"; ma=2592000,h3-T050=":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: 11016
x-xss-protection: 0
expires: Tue, 24 Aug 2021 09:03:54 GMT

GET
H2 200 KFOlCnqEu92Fr1MmSU5fBBc4AMP6lQ.woff2
fonts.gstatic.com/s/roboto/v20/ 11 KB
11 KB 6ms
5ms Font
font/woff2 2a00:1450:4001:81a::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/roboto/v20/KFOlCnqEu92Fr1MmSU5fBBc4AMP6lQ.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:81a::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Origin: https://cs61a.org
Referer: https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Mon, 24 Aug 2020 09:06:11 GMT
x-content-type-options: nosniff
last-modified: Wed, 24 Jul 2019 01:18:52 GMT
server: sffe
age: 140185
status: 200
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000
accept-ranges: bytes
timing-allow-origin: *
alt-svc: h3-29=":443"; ma=2592000,h3-27=":443"; ma=2592000,h3-T050=":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: 11180
x-xss-protection: 0
expires: Tue, 24 Aug 2021 09:06:11 GMT

GET
H2 200 QGYsz_wNahGAdqQ43Rh_fKDptfpA4Q.woff2
fonts.gstatic.com/s/worksans/v8/ 44 KB
44 KB 6ms
6ms Font
font/woff2 2a00:1450:4001:81a::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/worksans/v8/QGYsz_wNahGAdqQ43Rh_fKDptfpA4Q.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:81a::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Origin: https://cs61a.org
Referer: https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Mon, 24 Aug 2020 09:03:55 GMT
x-content-type-options: nosniff
last-modified: Fri, 26 Jun 2020 02:42:54 GMT
server: sffe
age: 140321
status: 200
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000
accept-ranges: bytes
timing-allow-origin: *
alt-svc: h3-29=":443"; ma=2592000,h3-27=":443"; ma=2592000,h3-T050=":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: 45196
x-xss-protection: 0
expires: Tue, 24 Aug 2021 09:03:55 GMT

GET
H/2+Q/46 200 KFOlCnqEu92Fr1MmEU9fBBc4AMP6lQ.woff2
fonts.gstatic.com/s/roboto/v20/ 11 KB
11 KB 27ms
13ms Font
font/woff2 2a00:1450:4001:81b::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/roboto/v20/KFOlCnqEu92Fr1MmEU9fBBc4AMP6lQ.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700

Protocol

HTTP/2+QUIC/46

Security

QUIC, , AES_128_GCM

Server

2a00:1450:4001:81b::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Origin: https://cs61a.org
Referer: https://fonts.googleapis.com/css?family=Inconsolata|Roboto:300,400,500|Work+Sans:400,700
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Mon, 24 Aug 2020 11:04:01 GMT
x-content-type-options: nosniff
last-modified: Wed, 24 Jul 2019 01:18:48 GMT
server: sffe
age: 133115
status: 200
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000
accept-ranges: bytes
timing-allow-origin: *
alt-svc: h3-29=":443"; ma=2592000,h3-27=":443"; ma=2592000,h3-T051=":443"; ma=2592000,h3-T050=":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: 11056
x-xss-protection: 0
expires: Tue, 24 Aug 2021 11:04:01 GMT

GET
H2 200 glyphicons-halflings-regular.woff2
cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/fonts/ 18 KB
18 KB 33ms
19ms Font
application/octet-stream 2606:4700::6811:4f6b
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/fonts/glyphicons-halflings-regular.woff2

Requested by

Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700::6811:4f6b , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

Security Headers

Name	Value
Strict-Transport-Security	max-age=15780000; includeSubDomains

Request headers

Origin: https://cs61a.org
Referer: https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:36 GMT
vary: Accept-Encoding
cf-cache-status: HIT
age: 99137
x-via: cfworker/kv
status: 200
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400
content-length: 18028
cf-request-id: 04c9abea5e0000d6e19a1ca200000001
timing-allow-origin: *
last-modified: Mon, 04 May 2020 16:17:20 GMT
server: cloudflare
etag: "5eb04010-466c"
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
strict-transport-security: max-age=15780000; includeSubDomains
content-type: application/octet-stream; charset=utf-8
access-control-allow-origin: *
cache-control: public, max-age=30672000
accept-ranges: bytes
cf-ray: 5c8948f09970d6e1-FRA
expires: Mon, 16 Aug 2021 00:02:36 GMT

HEAD
H2 200 / Show response
cs61a.org/lab/lab00/ 0
38 B 190ms
190ms XHR
text/html 104.199.121.146
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://cs61a.org/lab/lab00/
Requested by: Host: cs61a.org
URL: https://cs61a.org/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.199.121.146 Mountain View, United States, ASN15169 (GOOGLE, US),
Reverse DNS: 146.121.199.104.bc.googleusercontent.com
Software: Caddy /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Referer: https://cs61a.org/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Response headers

date: Wed, 26 Aug 2020 00:02:36 GMT
last-modified: Tue, 25 Aug 2020 20:26:02 GMT
server: Caddy
etag: "qfmzfe14uo"
content-type: text/html; charset=utf-8
status: 200
accept-ranges: bytes
content-length: 52944

Verdicts & Comments Add Verdict or Comment

7 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.

0 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

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.

cdnjs.cloudflare.com
cs61a.org
fonts.googleapis.com
fonts.gstatic.com
secure-internal-links.app.cs61a.org
104.197.97.139
104.199.121.146
2606:4700::6811:4e6b
2606:4700::6811:4f6b
2a00:1450:4001:817::200a
2a00:1450:4001:81a::2003
2a00:1450:4001:81b::2003
05b85d96f41fff14d8f608dad03ab71e2c1017c2da0914d7c59291bad7a54f8e
11b63d779c6064938baa28a5d28c38c00bd99f8607af6a301ce765fe8ed61664
266d6e08879cb16ed3fcb8c1502e0fbb65e02bc71f3f635815502632e4f3bcee
53964478a7c634e8dad34ecc303dd8048d00dce4993906de1bacf67f663486ef
64e4252e13bf153de09f95808733daa623ae03e4d17c762953228001762b0ff8
88d3bce76f26224fff7a01f682747e49f25ae9096dbb592dc2ec4a593042ea2e
98dad67fe954223a5750512f969fb65436f8361fb65b80bdce385429836b113f
9d004484a7c5fbf6e220d223f58de0adb56a0613923d1611b7714da825b77d98
bba578b63627c66fe633c19555b95759ba3340bfa22367f5ea1d9f327609bf15
db7c8c06f931817a56ab46ff4542faa02573afa43c367513747836050f69ee8d
e2bbd2b09abefa32cde1cb71b2a53ffcd76dc5dda133604306ea55369a71bb2e
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
f75e846cc83bd11432f4b1e21a45f31bc85283d11d372f7b19accd1bf6a2635c

cs61a.org Open in urlscan Pro 104.199.121.146 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page URL History Show full URLs

Detected technologies

Page Statistics

18 Requests

100 %HTTPS

71 %IPv6

4 Domains

5 Subdomains

6 IPs

2 Countries

175 kBTransfer

422 kBSize

0 Cookies

30 Outgoing links

Page URL History

Redirected requests

18 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

Request headers

Response headers

Redirect headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Verdicts & Comments Add Verdict or Comment

7 JavaScript Global Variables

0 Cookies

Indicators

cs61a.org Open in urlscan Pro
104.199.121.146 Public Scan

Screenshot
Live screenshot

Full Image

18
Requests

100 %
HTTPS

71 %
IPv6

4
Domains

5
Subdomains

6
IPs

2
Countries

175 kB
Transfer

422 kB
Size

0
Cookies

18 HTTP transactions
0 data transactions