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www.duolingo.com Open in urlscan Pro
54.175.208.130  Public Scan

Go To Rescan Add Verdict Report
URL: https://www.duolingo.com/
Submission: On April 25 via manual from US
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 15 IPs in 2 countries across 12 domains to perform 44 HTTP transactions. The main IP is 54.175.208.130, located in Ashburn, United States and belongs to AMAZON-AES - Amazon.com, Inc., US. The main domain is www.duolingo.com.
TLS certificate: Issued by Go Daddy Secure Certificate Authority... on November 12th 2016. Valid for: 2 years.
This is the only time www.duolingo.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 54.175.208.130 14618 (AMAZON-AES)
14 52.85.177.222 16509 (AMAZON-02)
1 2 172.217.21.200 15169 (GOOGLE)
1 93.184.220.110 15133 (EDGECAST)
1 104.19.194.102 13335 (CLOUDFLAR...)
1 1 173.194.76.155 15169 (GOOGLE)
1 1 74.125.232.48 15169 (GOOGLE)
1 172.217.22.99 15169 (GOOGLE)
2 52.85.177.217 16509 (AMAZON-02)
3 159.122.19.188 36351 (SOFTLAYER)
3 159.122.19.133 36351 (SOFTLAYER)
3 185.60.216.19 32934 (FACEBOOK)
2 172.217.22.110 15169 (GOOGLE)
4 52.85.173.232 16509 (AMAZON-02)
2 52.85.173.176 16509 (AMAZON-02)
4 185.60.216.35 32934 (FACEBOOK)
2 52.34.200.91 16509 (AMAZON-02)
44 15
1    54.175.208.130 (Ashburn, United States)

ASN14618 (AMAZON-AES - Amazon.com, Inc., US)
PTR: ec2-54-175-208-130.compute-1.amazonaws.com
www.duolingo.com
14    52.85.177.222 (Seattle, United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)
PTR: server-52-85-177-222.fra6.r.cloudfront.net
d7mj4aqfscim2.cloudfront.net
2    172.217.21.200 (Mountain View, United States)

ASN15169 (GOOGLE - Google LLC, US)
PTR: fra16s12-in-f8.1e100.net
ssl.google-analytics.com
1    93.184.220.110 (United States)

ASN15133 (EDGECAST - MCI Communications Services, Inc. d/b/a Verizon Business, US)
assets.zendesk.com
1    104.19.194.102 (San Francisco, United States)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)
cdnjs.cloudflare.com
1    173.194.76.155 (Portage, United States)

ASN15169 (GOOGLE - Google LLC, US)
PTR: ws-in-f155.1e100.net
stats.g.doubleclick.net
1    74.125.232.48 (Mountain View, United States)

ASN15169 (GOOGLE - Google LLC, US)
www.google.com
1    172.217.22.99 (Mountain View, United States)

ASN15169 (GOOGLE - Google LLC, US)
PTR: fra15s18-in-f99.1e100.net
www.google.nl
2    52.85.177.217 (Seattle, United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)
PTR: server-52-85-177-217.fra6.r.cloudfront.net
d3kwyfyztuo0xs.cloudfront.net
3    159.122.19.188 (United States)

ASN36351 (SOFTLAYER - SoftLayer Technologies Inc., US)
PTR: bc.13.7a9f.ip4.static.sl-reverse.com
api.mixpanel.com
3    159.122.19.133 (United States)

ASN36351 (SOFTLAYER - SoftLayer Technologies Inc., US)
PTR: 85.13.7a9f.ip4.static.sl-reverse.com
api.mixpanel.com
3    185.60.216.19 (Ireland)

ASN32934 (FACEBOOK - Facebook, Inc., US)
connect.facebook.net
2    172.217.22.110 (Mountain View, United States)

ASN15169 (GOOGLE - Google LLC, US)
PTR: fra15s18-in-f110.1e100.net
apis.google.com
4    52.85.173.232 (Seattle, United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)
PTR: server-52-85-173-232.fra6.r.cloudfront.net
ljknv3sref.execute-api.us-east-1.amazonaws.com
2    52.85.173.176 (Seattle, United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)
PTR: server-52-85-173-176.fra6.r.cloudfront.net
ljknv3sref.execute-api.us-east-1.amazonaws.com
4    185.60.216.35 (Ireland)

ASN32934 (FACEBOOK - Facebook, Inc., US)
www.facebook.com
2    52.34.200.91 (Boardman, United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)
PTR: ec2-52-34-200-91.us-west-2.compute.amazonaws.com
duolingotest.zendesk.com
Domain Requested by
14 d7mj4aqfscim2.cloudfront.net www.duolingo.com
d7mj4aqfscim2.cloudfront.net
6 ljknv3sref.execute-api.us-east-1.amazonaws.com cdnjs.cloudflare.com
www.duolingo.com
6 api.mixpanel.com cdnjs.cloudflare.com
4 www.facebook.com www.duolingo.com
3 connect.facebook.net www.duolingo.com
connect.facebook.net
2 duolingotest.zendesk.com assets.zendesk.com
2 apis.google.com www.duolingo.com
apis.google.com
2 d3kwyfyztuo0xs.cloudfront.net cdnjs.cloudflare.com
www.duolingo.com
2 ssl.google-analytics.com 1 redirects www.duolingo.com
1 www.google.nl www.duolingo.com
1 www.google.com 1 redirects
1 stats.g.doubleclick.net 1 redirects
1 cdnjs.cloudflare.com www.duolingo.com
1 assets.zendesk.com www.duolingo.com
1 www.duolingo.com
44 15
Subject Issuer Validity Valid
*.duolingo.com
Go Daddy Secure Certificate Authority - G2		 2016-11-12 -
2019-02-05		 2 years crt.sh

This page contains 2 frames:

Primary Page: https://www.duolingo.com/
Frame ID: F26FD0E001649F3781548779663ACD5
Requests: 41 HTTP requests in this frame

Frame: https://assets.zendesk.com/embeddable_framework/main.js
Frame ID: 86640AAC4852DBE74E5E661F7177BC94
Requests: 3 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Detected technologies

Overall confidence: 100%
Detected patterns
  • headers server /Ubuntu/i
Overall confidence: 100%
Detected patterns
  • headers server /nginx(?:\/([\d.]+))?/i
Overall confidence: 100%
Detected patterns
  • script /\/\/connect\.facebook\.net\/[^\/]*\/[a-z]*\.js/i
Overall confidence: 100%
Detected patterns
  • script /google-analytics\.com\/(?:ga|urchin|(analytics))\.js/i
  • env /^gaGlobal$/i
Overall confidence: 100%
Detected patterns
  • env /^(?:SoundManager|BaconPlayer)$/i
Overall confidence: 100%
Detected patterns
  • env /^jQuery$/i
Overall confidence: 100%
Detected patterns
  • env /^webpackJsonp$/i

Page Statistics

44
Requests

2 %
HTTPS

0 %
IPv6

12
Domains

15
Subdomains

15
IPs

2
Countries

1770 kB
Transfer

6359 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 8
  • https://ssl.google-analytics.com/r/__utm.gif?utmwv=5.7.2&utms=1&utmn=1167642109&utmhn=www.duolingo.com&utmcs=UTF-8&utmsr=1600x1200&utmvp=1585x1200&utmsc=24-bit&utmul=en-us&utmje=0&utmfl=-&utmdt=Duolingo%3A%20Learn%20Spanish%2C%20French%20and%20other%20languages%20for%20free&utmhid=1688184645&utmr=-&utmp=%2F&utmht=1524680744118&utmac=UA-21595814-1&utmcc=__utma%3D226518408.315126344.1524680744.1524680744.1524680744.1%3B%2B__utmz%3D226518408.1524680744.1.1.utmcsr%3D(direct)%7Cutmccn%3D(direct)%7Cutmcmd%3D(none)%3B&utmjid=717941955&utmredir=1&utmu=qAAAAAAAAAAAAAAAAAAAAAAE~ HTTP 302
  • https://stats.g.doubleclick.net/r/collect?v=1&aip=1&t=dc&_r=3&tid=UA-21595814-1&cid=315126344.1524680744&jid=717941955&_v=5.7.2&z=1167642109 HTTP 302
  • https://www.google.com/ads/ga-audiences?v=1&aip=1&t=sr&_r=4&tid=UA-21595814-1&cid=315126344.1524680744&jid=717941955&_v=5.7.2&z=1167642109 HTTP 302
  • https://www.google.nl/ads/ga-audiences?v=1&aip=1&t=sr&_r=4&tid=UA-21595814-1&cid=315126344.1524680744&jid=717941955&_v=5.7.2&z=1167642109&slf_rd=1&random=1356485485

44 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request Cookie set /
www.duolingo.com/ 		61 KB
14 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://www.duolingo.com/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
54.175.208.130 Ashburn, United States, ASN14618 (AMAZON-AES - Amazon.com, Inc., US),
Reverse DNS
ec2-54-175-208-130.compute-1.amazonaws.com
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
c638cc33358ee20f44e09f2aefdd2f3aeda5928179013abdc6274344b090f498
Security Headers
Name Value
X-Frame-Options SAMEORIGIN

Request headers

Pragma
no-cache
Accept-Encoding
gzip, deflate
Host
www.duolingo.com
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Accept
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Cache-Control
no-cache
Connection
keep-alive
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

Pragma
no-cache
Date
Wed, 25 Apr 2018 18:25:43 GMT
Content-Encoding
gzip
Server
nginx/1.4.6 (Ubuntu)
X-WS
10.0.4.242
X-TID
04f20cfa5ae0c7ba0137
X-IPCountry
DE
X-Frame-Options
SAMEORIGIN
Content-Type
text/html; charset=UTF-8
Set-Cookie
lang=en; Domain=.duolingo.com; Max-Age=31536000; Path=/; expires=Thu, 25-Apr-2019 18:25:42 GMT logged_out_uuid=b49caf04-d451-4e33-9c20-443a4b917e04; Domain=.duolingo.com; Max-Age=31536000; Path=/; expires=Thu, 25-Apr-2019 18:25:43 GMT splash_rand=0.759086835343; Domain=.duolingo.com; Max-Age=31536000; Path=/; expires=Thu, 25-Apr-2019 18:25:43 GMT wuuid=b0c083ef-02a1-4d45-afe9-51d94da19375 AWSELB=91E12D7D1E1B37CA82C3043817CF6AE0B5D25E6E40B7CC858F6CCCEDBC3697D2C1A904B7E98B7878C3FE615AD074FAAF7E1F501546B5F401684F98C2E69E62DB7B301FCFC4;PATH=/;MAX-AGE=7200
Cache-control
no-cache="set-cookie"
Connection
keep-alive
Content-Length
13104
X-RUNTIME
1.07100
Expires
-1
9337e707070283b888b5af3cff5ab761_mv_9337e707070283b888b5af3cff5ab761_0.min.css
d7mj4aqfscim2.cloudfront.net/proxy/css2/ 		379 KB
45 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://d7mj4aqfscim2.cloudfront.net/proxy/css2/9337e707070283b888b5af3cff5ab761_mv_9337e707070283b888b5af3cff5ab761_0.min.css
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
52.85.177.222 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-177-222.fra6.r.cloudfront.net
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
801479bbd2610398fcbbf476b3b014d9d0d64579990ca94fa80c558a627644bf

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

date
Fri, 13 Apr 2018 19:15:20 GMT
content-encoding
gzip
age
1033824
x-cache
Hit from cloudfront
status
200
content-length
45388
access-control-allow-origin
*
last-modified
Fri, 13 Apr 2018 19:14:07 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"65a0e9c56bc3e6c487be6c49a36b34b9"
x-amz-version-id
Y8BR1IWn.0mQwmfeK.gmSaTBNT7oQPpj
via
1.1 d2e34d11a094aa8f0c8077cfdf5b4b38.cloudfront.net (CloudFront)
cache-control
max-age=315360000, public
accept-ranges
bytes
content-type
text/css
x-amz-cf-id
KTvxBDwq11RjoJHGEixefXPzhyIvaWsB-JZc1nXn3cpkB8Pt8ms8gg==
expires
Thu, 31 Dec 2037 23:55:55 GMT
9337e707070283b888b5af3cff5ab761_mv_9337e707070283b888b5af3cff5ab761_1.min.css
d7mj4aqfscim2.cloudfront.net/proxy/css2/ 		358 KB
48 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://d7mj4aqfscim2.cloudfront.net/proxy/css2/9337e707070283b888b5af3cff5ab761_mv_9337e707070283b888b5af3cff5ab761_1.min.css
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
52.85.177.222 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-177-222.fra6.r.cloudfront.net
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
38311e8300cb793cd0e07ed574df21180d6b0cb4352c413d4156bfcc59179ccb

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

date
Fri, 13 Apr 2018 19:15:20 GMT
content-encoding
gzip
age
1033824
x-cache
Hit from cloudfront
status
200
content-length
49001
access-control-allow-origin
*
last-modified
Fri, 13 Apr 2018 19:14:07 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"34795d0a58c162525d3deac278f3651b"
x-amz-version-id
lCB0_R_yUfyLVfZwMpFsoHla6bjGKHkK
via
1.1 d2e34d11a094aa8f0c8077cfdf5b4b38.cloudfront.net (CloudFront)
cache-control
max-age=315360000, public
accept-ranges
bytes
content-type
text/css
x-amz-cf-id
SEhGsRinmg4Eol7VtIWPfATn4sNghCbxakX4JUVgej9PBR-d_5IlDg==
expires
Thu, 31 Dec 2037 23:55:55 GMT
9337e707070283b888b5af3cff5ab761_mv_9337e707070283b888b5af3cff5ab761_2.min.css
d7mj4aqfscim2.cloudfront.net/proxy/css2/ 		247 KB
26 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://d7mj4aqfscim2.cloudfront.net/proxy/css2/9337e707070283b888b5af3cff5ab761_mv_9337e707070283b888b5af3cff5ab761_2.min.css
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
52.85.177.222 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-177-222.fra6.r.cloudfront.net
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
a97d25a7d9137f0c4a5ec9dbe6c15fbb662c9400ae5f61cdd89f2742f35e4d44

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

date
Wed, 18 Apr 2018 16:51:00 GMT
content-encoding
gzip
age
610484
x-cache
Hit from cloudfront
status
200
content-length
25878
access-control-allow-origin
*
last-modified
Fri, 13 Apr 2018 19:14:08 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"70b4454699dc262662385e90803cca9c"
x-amz-version-id
M84b5lPNAEZrKTAjqiRSV0LLp.tx0hwW
via
1.1 d2e34d11a094aa8f0c8077cfdf5b4b38.cloudfront.net (CloudFront)
cache-control
max-age=315360000, public
accept-ranges
bytes
content-type
text/css
x-amz-cf-id
BLdp0q3PDTEdeQJcQZB5i6fw5W9FE37QQ9GGXy7M8t-Utz4MAc5VGg==
expires
Thu, 31 Dec 2037 23:55:55 GMT
96f17d0f170b8f611e68-vendor.js
d7mj4aqfscim2.cloudfront.net/proxy/js2/ 		706 KB
230 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://d7mj4aqfscim2.cloudfront.net/proxy/js2/96f17d0f170b8f611e68-vendor.js
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
52.85.177.222 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-177-222.fra6.r.cloudfront.net
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
dfb3f7f372515320eccf85df5499971ed9db162eb48cf0b57550ad438019e386

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com

Response headers

date
Tue, 24 Apr 2018 19:26:40 GMT
content-encoding
gzip
age
82744
x-cache
Hit from cloudfront
status
200
content-length
234940
access-control-allow-origin
*
last-modified
Tue, 24 Apr 2018 19:25:25 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"582a1d42d935ecec5742512ee9b2b39b"
x-amz-version-id
LZZPwqRUtDBdv98j7OeqB9DKZaeQF7Ij
via
1.1 fc8079312db6046d812ded83f2668ac6.cloudfront.net (CloudFront)
cache-control
max-age=315360000, public
accept-ranges
bytes
content-type
application/javascript
x-amz-cf-id
YKnR9j1q_OovKpS-A6wJfpj_KAae9aNL66eAMUJYIkcXtx0dwMCKgA==
expires
Thu, 31 Dec 2037 23:55:55 GMT
96f17d0f170b8f611e68-duolingo.js
d7mj4aqfscim2.cloudfront.net/proxy/js2/ 		1 MB
268 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://d7mj4aqfscim2.cloudfront.net/proxy/js2/96f17d0f170b8f611e68-duolingo.js
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
52.85.177.222 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-177-222.fra6.r.cloudfront.net
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
4beebbca28b7eb44357f374cb906442090478d089f27f5a45e32e63ed2b235b1

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com

Response headers

date
Tue, 24 Apr 2018 19:26:40 GMT
content-encoding
gzip
age
82744
x-cache
Hit from cloudfront
status
200
content-length
273192
access-control-allow-origin
*
last-modified
Tue, 24 Apr 2018 19:25:26 GMT
server
nginx/1.4.6 (Ubuntu)
etag
"59288952c1e899b40906d34dbb33ea68"
x-amz-version-id
PYy8mZdKVA4wI_cRi2vhriqCjJ8.hXWw
via
1.1 fc8079312db6046d812ded83f2668ac6.cloudfront.net (CloudFront)
cache-control
max-age=315360000, public
accept-ranges
bytes
content-type
application/javascript
x-amz-cf-id
tTZGgOxLtmGDdQr0k9PPDzbXwU3zrG8yVnwi3eUV9S3g97oRAXYUkg==
expires
Thu, 31 Dec 2037 23:55:55 GMT
ga.js
ssl.google-analytics.com/ 		45 KB
17 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://ssl.google-analytics.com/ga.js
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
172.217.21.200 Mountain View, United States, ASN15169 (GOOGLE - Google LLC, US),
Reverse DNS
fra16s12-in-f8.1e100.net
Software
Golfe2 /
Resource Hash
1259ea99bd76596239bfd3102c679eb0a5052578dc526b0452f4d42f8bcdd45f
Security Headers
Name Value
Strict-Transport-Security max-age=10886400; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

strict-transport-security
max-age=10886400; includeSubDomains; preload
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Thu, 12 Apr 2018 18:13:11 GMT
server
Golfe2
age
6740
date
Wed, 25 Apr 2018 16:33:24 GMT
vary
Accept-Encoding
content-type
text/javascript
status
200
cache-control
public, max-age=7200
timing-allow-origin
*
alt-svc
hq=":443"; ma=2592000; quic=51303433; quic=51303432; quic=51303431; quic=51303339; quic=51303335,quic=":443"; ma=2592000; v="43,42,41,39,35"
content-length
17168
expires
Wed, 25 Apr 2018 18:33:24 GMT
main.js
assets.zendesk.com/embeddable_framework/ Frame 8664 		2 MB
629 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://assets.zendesk.com/embeddable_framework/main.js
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
93.184.220.110 , United States, ASN15133 (EDGECAST - MCI Communications Services, Inc. d/b/a Verizon Business, US),
Reverse DNS
Software
ECS (fcn/41C2) /
Resource Hash
a0bf582b23c22921896831d939fdc85c3065aa1e4d8e2d23884487b3dc350934
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

date
Wed, 25 Apr 2018 18:25:44 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Thu, 19 Apr 2018 06:24:46 GMT
server
ECS (fcn/41C2)
etag
"5ad8362e-1fee8c"
vary
Accept-Encoding
x-cache
HIT
content-type
application/javascript; charset=utf-8
status
200
cache-control
max-age=60, public, max-age=60, s-maxage=60
accept-ranges
bytes
content-length
643851
expires
Wed, 25 Apr 2018 18:26:44 GMT
rollbar.min.js
cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/ 		52 KB
17 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
104.19.194.102 San Francisco, United States, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
4ce156fa6a6d90dbd08888c336077fd5effef40796e01807e3303f11f2f4fa3b
Security Headers
Name Value
Strict-Transport-Security max-age=15780000; includeSubDomains

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com

Response headers

date
Wed, 25 Apr 2018 18:25:44 GMT
content-encoding
gzip
cf-cache-status
HIT
last-modified
Tue, 15 Aug 2017 20:03:26 GMT
server
cloudflare
status
200
expect-ct
max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary
Accept-Encoding
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
public, max-age=30672000
strict-transport-security
max-age=15780000; includeSubDomains
cf-ray
4112da9abb342678-FRA
expires
Mon, 15 Apr 2019 18:25:44 GMT
ga-audiences
www.google.nl/ads/
Redirect Chain
  • https://ssl.google-analytics.com/r/__utm.gif?utmwv=5.7.2&utms=1&utmn=1167642109&utmhn=www.duolingo.com&utmcs=UTF-8&utmsr=1600x1200&utmvp=1585x1200&utmsc=24-bit&utmul=en-us&utmje=0&utmfl=-&utmdt=Duo...
  • https://stats.g.doubleclick.net/r/collect?v=1&aip=1&t=dc&_r=3&tid=UA-21595814-1&cid=315126344.1524680744&jid=717941955&_v=5.7.2&z=1167642109
  • https://www.google.com/ads/ga-audiences?v=1&aip=1&t=sr&_r=4&tid=UA-21595814-1&cid=315126344.1524680744&jid=717941955&_v=5.7.2&z=1167642109
  • https://www.google.nl/ads/ga-audiences?v=1&aip=1&t=sr&_r=4&tid=UA-21595814-1&cid=315126344.1524680744&jid=717941955&_v=5.7.2&z=1167642109&slf_rd=1&random=1356485485
42 B
109 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://www.google.nl/ads/ga-audiences?v=1&aip=1&t=sr&_r=4&tid=UA-21595814-1&cid=315126344.1524680744&jid=717941955&_v=5.7.2&z=1167642109&slf_rd=1&random=1356485485
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
172.217.22.99 Mountain View, United States, ASN15169 (GOOGLE - Google LLC, US),
Reverse DNS
fra15s18-in-f99.1e100.net
Software
cafe /
Resource Hash
ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 1; mode=block

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

pragma
no-cache
date
Wed, 25 Apr 2018 18:25:44 GMT
x-content-type-options
nosniff
server
cafe
timing-allow-origin
*
p3p
policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
status
200
cache-control
no-cache, must-revalidate
content-type
image/gif
alt-svc
hq=":443"; ma=2592000; quic=51303433; quic=51303432; quic=51303431; quic=51303339; quic=51303335,quic=":443"; ma=2592000; v="43,42,41,39,35"
content-length
42
x-xss-protection
1; mode=block
expires
Fri, 01 Jan 1990 00:00:00 GMT

Redirect headers

pragma
no-cache
date
Wed, 25 Apr 2018 18:25:44 GMT
x-content-type-options
nosniff
server
cafe
p3p
policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
status
302
content-type
text/html; charset=UTF-8
location
https://www.google.nl/ads/ga-audiences?v=1&aip=1&t=sr&_r=4&tid=UA-21595814-1&cid=315126344.1524680744&jid=717941955&_v=5.7.2&z=1167642109&slf_rd=1&random=1356485485
cache-control
no-cache, must-revalidate
timing-allow-origin
*
alt-svc
hq=":443"; ma=2592000; quic=51303433; quic=51303432; quic=51303431; quic=51303339; quic=51303335,quic=":443"; ma=2592000; v="43,42,41,39,35"
content-length
0
x-xss-protection
1; mode=block
expires
Fri, 01 Jan 1990 00:00:00 GMT
0.9.3
d3kwyfyztuo0xs.cloudfront.net/config/latest/ 		0
355 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://d3kwyfyztuo0xs.cloudfront.net/config/latest/0.9.3
Requested by
Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js
Protocol
SPDY
Server
52.85.177.217 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-177-217.fra6.r.cloudfront.net
Software
AmazonS3 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Access-Control-Request-Method
GET
Origin
https://www.duolingo.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Access-Control-Request-Headers
content-type

Response headers

date
Wed, 25 Apr 2018 18:25:45 GMT
via
1.1 4cef090fba24867bb1a518bc7c5a1e98.cloudfront.net (CloudFront)
server
AmazonS3
access-control-allow-origin
*
vary
Origin, Access-Control-Request-Headers, Access-Control-Request-Method
access-control-allow-methods
GET
status
200
access-control-max-age
3000
x-cache
Miss from cloudfront
access-control-allow-headers
content-type
content-length
0
x-amz-cf-id
4caNktHEPhWf1Mzqkut2lQTytGx-oHytw5B5pENDfE_U7mAl6ceOlw==
/
api.mixpanel.com/decide/ 		65 B
598 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://api.mixpanel.com/decide/?verbose=1&version=1&lib=web&token=2178e0df6f413afb8c43afe3bbd13f04&ip=1&_=1524680744279
Requested by
Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js
Protocol
HTTP/1.1
Server
159.122.19.188 , United States, ASN36351 (SOFTLAYER - SoftLayer Technologies Inc., US),
Reverse DNS
bc.13.7a9f.ip4.static.sl-reverse.com
Software
nginx/1.11.1 /
Resource Hash
5fcb16854bcf34558fc9100ea313b2f61a3394ca23e65719553f09c902b2476e

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Via
1.1 google
Server
nginx/1.11.1
Access-Control-Allow-Headers
X-Requested-With
Vary
Accept-Encoding
Access-Control-Allow-Methods
GET, POST, OPTIONS
Content-Type
application/json
Access-Control-Allow-Origin
https://www.duolingo.com
Access-Control-Max-Age
1728000
Cache-Control
no-cache, no-store
Transfer-Encoding
chunked
Connection
keep-alive
Access-Control-Allow-Credentials
true
Content-Encoding
gzip
Alt-Svc
clear
/
api.mixpanel.com/track/ 		1 B
463 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://api.mixpanel.com/track/?data=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%3D&ip=1&_=1524680744282
Requested by
Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js
Protocol
HTTP/1.1
Server
159.122.19.133 , United States, ASN36351 (SOFTLAYER - SoftLayer Technologies Inc., US),
Reverse DNS
85.13.7a9f.ip4.static.sl-reverse.com
Software
nginx/1.11.1 /
Resource Hash
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Server
nginx/1.11.1
Access-Control-Max-Age
1728000
Access-Control-Allow-Methods
GET, POST, OPTIONS
Content-Type
application/json
Access-Control-Allow-Origin
https://www.duolingo.com
Access-Control-Expose-Headers
X-MP-CE-Backoff
Cache-Control
no-cache, no-store
Access-Control-Allow-Credentials
true
Connection
keep-alive
Access-Control-Allow-Headers
X-Requested-With
Content-Length
1
sdk.js
connect.facebook.net/en_US/ 		215 KB
67 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://connect.facebook.net/en_US/sdk.js
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
185.60.216.19 , Ireland, ASN32934 (FACEBOOK - Facebook, Inc., US),
Reverse DNS
Software
/
Resource Hash
89e24b262f588e8a716bc685b9a5c89d2ab6b80f22d541c686b19936e674e10a
Security Headers
Name Value
Content-Security-Policy default-src * data: blob:;script-src *.facebook.com *.fbcdn.net *.facebook.net *.google-analytics.com *.virtualearth.net *.google.com 127.0.0.1:* *.spotilocal.com:* 'unsafe-inline' 'unsafe-eval' fbstatic-a.akamaihd.net fbcdn-static-b-a.akamaihd.net *.atlassolutions.com blob: data: 'self';style-src data: blob: 'unsafe-inline' *;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net *.spotilocal.com:* *.akamaihd.net wss://*.facebook.com:* https://fb.scanandcleanlocal.com:* *.atlassolutions.com attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self';
Strict-Transport-Security max-age=31536000; preload; includeSubDomains
X-Content-Type-Options nosniff
X-Frame-Options DENY
X-Xss-Protection 0

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

strict-transport-security
max-age=31536000; preload; includeSubDomains
content-encoding
gzip
x-content-type-options
nosniff
content-md5
0YCX19up7Dm7LpHW3556DQ==
status
200
content-length
67748
x-xss-protection
0
x-fb-debug
Z2xHGZ1BP4BnLVYMOBZj+sosOj+8BY++Ac5u8jDykDh6lUADX3TNuBrz0n8Gm4AGV5lMEgNlQfj8b5zuohIQVg==
x-fb-content-md5
6f810925c2f1f963cfda57f1ba0fb28e
x-frame-options
DENY
date
Wed, 25 Apr 2018 18:25:44 GMT
vary
Accept-Encoding
content-type
application/x-javascript; charset=utf-8
access-control-expose-headers
X-FB-Content-MD5
cache-control
public,max-age=1200,stale-while-revalidate=3600
etag
"0cde15db3247fc030777e2fc992d3714"
content-security-policy
default-src * data: blob:;script-src *.facebook.com *.fbcdn.net *.facebook.net *.google-analytics.com *.virtualearth.net *.google.com 127.0.0.1:* *.spotilocal.com:* 'unsafe-inline' 'unsafe-eval' fbstatic-a.akamaihd.net fbcdn-static-b-a.akamaihd.net *.atlassolutions.com blob: data: 'self';style-src data: blob: 'unsafe-inline' *;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net *.spotilocal.com:* *.akamaihd.net wss://*.facebook.com:* https://fb.scanandcleanlocal.com:* *.atlassolutions.com attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self';
timing-allow-origin
*
expires
Wed, 25 Apr 2018 18:28:04 GMT
fbevents.js
connect.facebook.net/en_US/ 		40 KB
13 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://connect.facebook.net/en_US/fbevents.js
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
185.60.216.19 , Ireland, ASN32934 (FACEBOOK - Facebook, Inc., US),
Reverse DNS
Software
/
Resource Hash
0259af4061f7c117a693c77c82d9e93e06aa00f29a940fa65685a446ba14f50c
Security Headers
Name Value
Content-Security-Policy default-src * data: blob:;script-src *.facebook.com *.fbcdn.net *.facebook.net *.google-analytics.com *.virtualearth.net *.google.com 127.0.0.1:* *.spotilocal.com:* 'unsafe-inline' 'unsafe-eval' fbstatic-a.akamaihd.net fbcdn-static-b-a.akamaihd.net *.atlassolutions.com blob: data: 'self';style-src data: blob: 'unsafe-inline' *;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net *.spotilocal.com:* *.akamaihd.net wss://*.facebook.com:* https://fb.scanandcleanlocal.com:* *.atlassolutions.com attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self' chrome-extension://boadgeojelhgndaghljhdicfkmllpafd chrome-extension://dliochdbjfkdbacpmhlcpmleaejidimm;
Strict-Transport-Security max-age=31536000; preload; includeSubDomains
X-Content-Type-Options nosniff
X-Frame-Options DENY
X-Xss-Protection 0

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

content-security-policy
default-src * data: blob:;script-src *.facebook.com *.fbcdn.net *.facebook.net *.google-analytics.com *.virtualearth.net *.google.com 127.0.0.1:* *.spotilocal.com:* 'unsafe-inline' 'unsafe-eval' fbstatic-a.akamaihd.net fbcdn-static-b-a.akamaihd.net *.atlassolutions.com blob: data: 'self';style-src data: blob: 'unsafe-inline' *;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net *.spotilocal.com:* *.akamaihd.net wss://*.facebook.com:* https://fb.scanandcleanlocal.com:* *.atlassolutions.com attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self' chrome-extension://boadgeojelhgndaghljhdicfkmllpafd chrome-extension://dliochdbjfkdbacpmhlcpmleaejidimm;
content-encoding
gzip
x-content-type-options
nosniff
status
200
vary
Origin, Accept-Encoding
content-length
12794
x-xss-protection
0
pragma
public
x-fb-debug
WCWFbPGC/YYUcV2+XdIEOcSgqd4Qo0cS0zKTEdrOxCI3E8BAuGw4ZxZRc3Vc3z0tKW+TnLO2qPLn5/0xxMYjWg==
x-frame-options
DENY
date
Wed, 25 Apr 2018 18:25:44 GMT
strict-transport-security
max-age=31536000; preload; includeSubDomains
access-control-allow-methods
OPTIONS
content-type
application/x-javascript; charset=utf-8
access-control-allow-origin
https://connect.facebook.net
access-control-expose-headers
X-FB-Debug, X-Loader-Length
cache-control
public, max-age=1200
access-control-allow-credentials
true
expires
Sat, 01 Jan 2000 00:00:00 GMT
client:plusone.js
apis.google.com/js/ 		43 KB
17 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://apis.google.com/js/client:plusone.js?onload=loadGoogleClientLibraries
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
172.217.22.110 Mountain View, United States, ASN15169 (GOOGLE - Google LLC, US),
Reverse DNS
fra15s18-in-f110.1e100.net
Software
ESF /
Resource Hash
b4e4ef18732053efd90f89c57cda7136f96700d4f4fc2460ea9c0e330a96bb7c
Security Headers
Name Value
Content-Security-Policy script-src 'unsafe-inline' 'unsafe-eval' 'self' https://*.gstatic.com https://www.google-analytics.com https://pagead2.googleadservices.com https://pagead2.googlesyndication.com https://tpc.googlesyndication.com https://s.ytimg.com https://www.youtube.com;report-uri /_/cspreport/es_oz_20180422.13_p0
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

content-security-policy
script-src 'unsafe-inline' 'unsafe-eval' 'self' https://*.gstatic.com https://www.google-analytics.com https://pagead2.googleadservices.com https://pagead2.googlesyndication.com https://tpc.googlesyndication.com https://s.ytimg.com https://www.youtube.com;report-uri /_/cspreport/es_oz_20180422.13_p0
content-encoding
gzip
x-content-type-options
nosniff
p3p
CP="This is not a P3P policy! See g.co/p3phelp for more info."
status
200
alt-svc
hq=":443"; ma=2592000; quic=51303433; quic=51303432; quic=51303431; quic=51303339; quic=51303335,quic=":443"; ma=2592000; v="43,42,41,39,35"
x-xss-protection
1; mode=block
x-ua-compatible
IE=edge, chrome=1
server
ESF
x-frame-options
SAMEORIGIN
date
Wed, 25 Apr 2018 18:25:44 GMT
strict-transport-security
max-age=31536000
content-type
application/javascript; charset=utf-8
cache-control
private, max-age=1800, stale-while-revalidate=1800
etag
"36f78b692a731615192507f1351f5eef"
timing-allow-origin
*
expires
Wed, 25 Apr 2018 18:25:44 GMT
museosansrounded-500-webfont.woff2
d7mj4aqfscim2.cloudfront.net/proxy/fonts/museo/ 		22 KB
23 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://d7mj4aqfscim2.cloudfront.net/proxy/fonts/museo/museosansrounded-500-webfont.woff2
Requested by
Host: d7mj4aqfscim2.cloudfront.net
URL: https://d7mj4aqfscim2.cloudfront.net/proxy/js2/96f17d0f170b8f611e68-vendor.js
Protocol
SPDY
Server
52.85.177.222 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-177-222.fra6.r.cloudfront.net
Software
nginx/1.4.6 (Ubuntu) /
Resource Hash
56d885c1b14efccefc2380dbe178810255ab3cbb62736167b0b331c1a781b653

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
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Full URL
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nginx/1.11.1
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https://ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/events
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content-encoding
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last-modified
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server
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2571712
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Requested by
Host: d7mj4aqfscim2.cloudfront.net
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Protocol
SPDY
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content-encoding
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server
nginx/1.4.6 (Ubuntu)
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200
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General
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URL: https://d7mj4aqfscim2.cloudfront.net/proxy/js2/96f17d0f170b8f611e68-vendor.js
Protocol
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gzip
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nginx/1.4.6 (Ubuntu)
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expires
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URL: https://d7mj4aqfscim2.cloudfront.net/proxy/js2/96f17d0f170b8f611e68-vendor.js
Protocol
SPDY
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server
nginx/1.4.6 (Ubuntu)
age
3167028
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200
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expires
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URL: https://d7mj4aqfscim2.cloudfront.net/proxy/js2/96f17d0f170b8f611e68-vendor.js
Protocol
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Response headers

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content-encoding
gzip
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server
nginx/1.4.6 (Ubuntu)
age
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Protocol
SPDY
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Fri, 13 Apr 2018 19:15:23 GMT
content-encoding
gzip
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server
nginx/1.4.6 (Ubuntu)
age
1033821
x-cache
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content-type
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200
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23 KB 		Font
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URL: https://d7mj4aqfscim2.cloudfront.net/proxy/js2/96f17d0f170b8f611e68-vendor.js
Protocol
SPDY
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52.85.177.222 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
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server-52-85-177-222.fra6.r.cloudfront.net
Software
nginx/1.4.6 (Ubuntu) /
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Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
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date
Tue, 20 Mar 2018 02:38:41 GMT
via
1.1 fc8079312db6046d812ded83f2668ac6.cloudfront.net (CloudFront)
age
3167223
x-cache
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200
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22980
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server
nginx/1.4.6 (Ubuntu)
etag
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expires
Thu, 31 Dec 2037 23:55:55 GMT
/
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https://api.mixpanel.com/decide/?verbose=1&version=2&lib=web&token=2178e0df6f413afb8c43afe3bbd13f04&distinct_id=b49caf04-d451-4e33-9c20-443a4b917e04&ip=1&_=1524680744372
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URL: https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js
Protocol
HTTP/1.1
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User-Agent
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Referer
https://www.duolingo.com/
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https://www.duolingo.com

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Via
1.1 google
Server
nginx/1.11.1
Access-Control-Allow-Headers
X-Requested-With
Vary
Accept-Encoding
Access-Control-Allow-Methods
GET, POST, OPTIONS
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application/json
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1728000
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chunked
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keep-alive
Access-Control-Allow-Credentials
true
Content-Encoding
gzip
Alt-Svc
clear
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api.mixpanel.com/track/ 		1 B
463 B 		XHR
General
Check archive.org
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Full URL
https://api.mixpanel.com/track/?data=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&ip=1&_=1524680744373
Requested by
Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js
Protocol
HTTP/1.1
Server
159.122.19.188 , United States, ASN36351 (SOFTLAYER - SoftLayer Technologies Inc., US),
Reverse DNS
bc.13.7a9f.ip4.static.sl-reverse.com
Software
nginx/1.11.1 /
Resource Hash
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Server
nginx/1.11.1
Access-Control-Max-Age
1728000
Access-Control-Allow-Methods
GET, POST, OPTIONS
Content-Type
application/json
Access-Control-Allow-Origin
https://www.duolingo.com
Access-Control-Expose-Headers
X-MP-CE-Backoff
Cache-Control
no-cache, no-store
Access-Control-Allow-Credentials
true
Connection
keep-alive
Access-Control-Allow-Headers
X-Requested-With
Content-Length
1
events
ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/ 		0
600 B 		XHR
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https://ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/events
Requested by
Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js
Protocol
HTTP/1.1
Server
52.85.173.176 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-173-176.fra6.r.cloudfront.net
Software
/
Resource Hash
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Request headers

Access-Control-Request-Method
POST
Origin
https://www.duolingo.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Access-Control-Request-Headers
content-type

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Via
1.1 940b367f846b05ee5d0f25268ff80731.cloudfront.net (CloudFront)
x-amz-apigw-id
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x-amzn-RequestId
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1800
Access-Control-Allow-Methods
POST,OPTIONS
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application/json
Access-Control-Allow-Origin
*
X-Cache
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Connection
keep-alive
Access-Control-Allow-Headers
Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token
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0
X-Amz-Cf-Id
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/
api.mixpanel.com/track/ 		1 B
463 B 		XHR
General
Check archive.org
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Full URL
https://api.mixpanel.com/track/?data=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%3D&ip=1&_=1524680744375
Requested by
Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js
Protocol
HTTP/1.1
Server
159.122.19.188 , United States, ASN36351 (SOFTLAYER - SoftLayer Technologies Inc., US),
Reverse DNS
bc.13.7a9f.ip4.static.sl-reverse.com
Software
nginx/1.11.1 /
Resource Hash
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Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Server
nginx/1.11.1
Access-Control-Max-Age
1728000
Access-Control-Allow-Methods
GET, POST, OPTIONS
Content-Type
application/json
Access-Control-Allow-Origin
https://www.duolingo.com
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X-MP-CE-Backoff
Cache-Control
no-cache, no-store
Access-Control-Allow-Credentials
true
Connection
keep-alive
Access-Control-Allow-Headers
X-Requested-With
Content-Length
1
events
ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/ 		0
600 B 		XHR
General
Check archive.org
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Full URL
https://ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/events
Requested by
Host: cdnjs.cloudflare.com
URL: https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js
Protocol
HTTP/1.1
Server
52.85.173.232 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-173-232.fra6.r.cloudfront.net
Software
/
Resource Hash
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Request headers

Access-Control-Request-Method
POST
Origin
https://www.duolingo.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Access-Control-Request-Headers
content-type

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Via
1.1 4cef090fba24867bb1a518bc7c5a1e98.cloudfront.net (CloudFront)
x-amz-apigw-id
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x-amzn-RequestId
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1800
Access-Control-Allow-Methods
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application/json
Access-Control-Allow-Origin
*
X-Cache
Miss from cloudfront
Connection
keep-alive
Access-Control-Allow-Headers
Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token
Content-Length
0
X-Amz-Cf-Id
qCEsa4XJWfTcN-R2Y8wQMuDYmlJyeh8htTJdqP4VFYnsSeNN-ZjFPw==
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apis.google.com/_/scs/apps-static/_/js/k=oz.gapi.en_US.ud0X1ANlltY.O/m=client,plusone/rt=j/sv=1/d=1/ed=1/am=AQE/rs=AGLTcCOcKpCWy1ppnaz1rAfxsno0yxWUNA/ 		282 KB
97 KB 		Script
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https://apis.google.com/_/scs/apps-static/_/js/k=oz.gapi.en_US.ud0X1ANlltY.O/m=client,plusone/rt=j/sv=1/d=1/ed=1/am=AQE/rs=AGLTcCOcKpCWy1ppnaz1rAfxsno0yxWUNA/cb=gapi.loaded_0
Requested by
Host: apis.google.com
URL: https://apis.google.com/js/client:plusone.js?onload=loadGoogleClientLibraries
Protocol
SPDY
Server
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sffe /
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Security Headers
Name Value
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Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

date
Mon, 23 Apr 2018 20:39:25 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Sat, 21 Apr 2018 05:39:44 GMT
server
sffe
age
164779
vary
Accept-Encoding
content-type
text/javascript; charset=UTF-8
status
200
cache-control
public, immutable, max-age=31536000
accept-ranges
bytes
alt-svc
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content-length
98917
x-xss-protection
1; mode=block
expires
Tue, 23 Apr 2019 20:39:25 GMT
1735692093320310
connect.facebook.net/signals/config/ 		57 KB
15 KB 		Script
General
Check archive.org
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Full URL
https://connect.facebook.net/signals/config/1735692093320310?v=2.8.14&r=stable
Requested by
Host: connect.facebook.net
URL: https://connect.facebook.net/en_US/fbevents.js
Protocol
SPDY
Server
185.60.216.19 , Ireland, ASN32934 (FACEBOOK - Facebook, Inc., US),
Reverse DNS
Software
/
Resource Hash
4004d430eb3825a8cdc3399a2394011308bbcdd884aef062b9c483d8c1005dd9
Security Headers
Name Value
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Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

content-security-policy
default-src * data: blob:;script-src *.facebook.com *.fbcdn.net *.facebook.net *.google-analytics.com *.virtualearth.net *.google.com 127.0.0.1:* *.spotilocal.com:* 'unsafe-inline' 'unsafe-eval' fbstatic-a.akamaihd.net fbcdn-static-b-a.akamaihd.net *.atlassolutions.com blob: data: 'self';style-src data: blob: 'unsafe-inline' *;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net *.spotilocal.com:* *.akamaihd.net wss://*.facebook.com:* https://fb.scanandcleanlocal.com:* *.atlassolutions.com attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self' chrome-extension://boadgeojelhgndaghljhdicfkmllpafd chrome-extension://dliochdbjfkdbacpmhlcpmleaejidimm;
content-encoding
gzip
x-content-type-options
nosniff
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200
vary
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content-length
15422
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0
pragma
public
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x-frame-options
DENY
date
Wed, 25 Apr 2018 18:25:44 GMT
strict-transport-security
max-age=31536000; preload; includeSubDomains
access-control-allow-methods
OPTIONS
content-type
application/x-javascript; charset=utf-8
access-control-allow-origin
https://connect.facebook.net
access-control-expose-headers
X-FB-Debug, X-Loader-Length
cache-control
public, max-age=1200
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true
expires
Sat, 01 Jan 2000 00:00:00 GMT
events
ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/ 		4 B
499 B 		XHR
General
Check archive.org
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Full URL
https://ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/events
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
HTTP/1.1
Server
52.85.173.176 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-173-176.fra6.r.cloudfront.net
Software
/
Resource Hash
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Request headers

Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Content-type
application/json

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Via
1.1 940b367f846b05ee5d0f25268ff80731.cloudfront.net (CloudFront)
x-amzn-RequestId
11485200-48b6-11e8-acc2-c15d697a8119
X-Cache
Miss from cloudfront
Content-Type
application/json
Access-Control-Allow-Origin
*
X-Amzn-Trace-Id
sampled=0;root=1-5ae0c828-efa05f7bfcb7ad47ec99db33
Connection
keep-alive
x-amz-apigw-id
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4
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events
ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/ 		4 B
499 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/events
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
HTTP/1.1
Server
52.85.173.232 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
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server-52-85-173-232.fra6.r.cloudfront.net
Software
/
Resource Hash
74234e98afe7498fb5daf1f36ac2d78acc339464f950703b8c019892f982b90b

Request headers

Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Content-type
application/json

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Via
1.1 4cef090fba24867bb1a518bc7c5a1e98.cloudfront.net (CloudFront)
x-amzn-RequestId
1147b598-48b6-11e8-bafc-49b2eee7c355
X-Cache
Miss from cloudfront
Content-Type
application/json
Access-Control-Allow-Origin
*
X-Amzn-Trace-Id
sampled=0;root=1-5ae0c828-051bf5768d2647b9a22483d2
Connection
keep-alive
x-amz-apigw-id
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4
X-Amz-Cf-Id
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events
ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/ 		4 B
499 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://ljknv3sref.execute-api.us-east-1.amazonaws.com/prod/events
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
HTTP/1.1
Server
52.85.173.232 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-173-232.fra6.r.cloudfront.net
Software
/
Resource Hash
74234e98afe7498fb5daf1f36ac2d78acc339464f950703b8c019892f982b90b

Request headers

Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Content-type
application/json

Response headers

Date
Wed, 25 Apr 2018 18:25:44 GMT
Via
1.1 9aac77db976fd4f008caa822737485da.cloudfront.net (CloudFront)
x-amzn-RequestId
1147b60c-48b6-11e8-b8af-8f03054cbe56
X-Cache
Miss from cloudfront
Content-Type
application/json
Access-Control-Allow-Origin
*
X-Amzn-Trace-Id
sampled=0;root=1-5ae0c828-2bd18e1ce383525eb29bed09
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keep-alive
x-amz-apigw-id
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4
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/
www.facebook.com/tr/ 		44 B
244 B 		Image
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Full URL
https://www.facebook.com/tr/?id=1735692093320310&ev=PageView&dl=https%3A%2F%2Fwww.duolingo.com%2F&rl=&if=false&ts=1524680744795&sw=1600&sh=1200&v=2.8.14&r=stable&ec=0&o=28&it=1524680744512
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
185.60.216.35 , Ireland, ASN32934 (FACEBOOK - Facebook, Inc., US),
Reverse DNS
Software
proxygen-bolt /
Resource Hash
10d8d42d73a02ddb877101e72fbfa15a0ec820224d97cedee4cf92d571be5caa

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

date
Wed, 25 Apr 2018 18:25:44 GMT
last-modified
Fri, 21 Dec 2012 00:00:01 GMT
server
proxygen-bolt
content-type
image/gif
status
200
cache-control
no-cache, must-revalidate, max-age=0
content-length
44
expires
Wed, 25 Apr 2018 18:25:44 GMT
/
www.facebook.com/tr/ 		44 B
198 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://www.facebook.com/tr/?id=1735692093320310&ev=splash%20load&dl=https%3A%2F%2Fwww.duolingo.com%2F&rl=&if=false&ts=1524680744798&sw=1600&sh=1200&v=2.8.14&r=stable&ec=1&o=28&it=1524680744512
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
185.60.216.35 , Ireland, ASN32934 (FACEBOOK - Facebook, Inc., US),
Reverse DNS
Software
proxygen-bolt /
Resource Hash
10d8d42d73a02ddb877101e72fbfa15a0ec820224d97cedee4cf92d571be5caa

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

date
Wed, 25 Apr 2018 18:25:44 GMT
last-modified
Fri, 21 Dec 2012 00:00:01 GMT
server
proxygen-bolt
content-type
image/gif
status
200
cache-control
no-cache, must-revalidate, max-age=0
content-length
44
expires
Wed, 25 Apr 2018 18:25:44 GMT
0.9.3
d3kwyfyztuo0xs.cloudfront.net/config/latest/ 		12 KB
13 KB 		XHR
General
Check archive.org
Download Go to
Full URL
https://d3kwyfyztuo0xs.cloudfront.net/config/latest/0.9.3
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
52.85.177.217 Seattle, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
server-52-85-177-217.fra6.r.cloudfront.net
Software
AmazonS3 /
Resource Hash
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Request headers

Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Content-Type
application/json

Response headers

date
Wed, 25 Apr 2018 15:02:44 GMT
via
1.1 4cef090fba24867bb1a518bc7c5a1e98.cloudfront.net (CloudFront)
vary
Origin
age
12181
x-cache
Hit from cloudfront
status
200
x-amz-meta-content-type
text/plain
content-length
12363
last-modified
Wed, 25 Apr 2018 15:02:40 GMT
server
AmazonS3
etag
"976de3204d5baef049c59ca11b976d76"
access-control-max-age
3000
access-control-allow-methods
GET
content-type
binary/octet-stream
access-control-allow-origin
*
accept-ranges
bytes
x-amz-cf-id
iYTwz07vvjyqo3uCJJ4PBYSZFs7-Pbfj7rKGbBZVTwgT8YH5O6vSRQ==
/
www.facebook.com/impression.php/f5150449d49bb8/ 		43 B
178 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://www.facebook.com/impression.php/f5150449d49bb8/?api_key=234536436609303&lid=115&payload=%7B%22source%22%3A%22jssdk%22%7D
Requested by
Host: www.duolingo.com
URL: https://www.duolingo.com/
Protocol
SPDY
Server
185.60.216.35 , Ireland, ASN32934 (FACEBOOK - Facebook, Inc., US),
Reverse DNS
Software
/
Resource Hash
548f2d6f4d0d820c6c5ffbeffcbd7f0e73193e2932eefe542accc84762deec87
Security Headers
Name Value
Content-Security-Policy default-src * data: blob:;script-src *.facebook.com *.fbcdn.net *.facebook.net *.google-analytics.com *.virtualearth.net *.google.com 127.0.0.1:* *.spotilocal.com:* 'unsafe-inline' 'unsafe-eval' fbstatic-a.akamaihd.net fbcdn-static-b-a.akamaihd.net *.atlassolutions.com blob: data: 'self';style-src data: blob: 'unsafe-inline' *;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net *.spotilocal.com:* *.akamaihd.net wss://*.facebook.com:* https://fb.scanandcleanlocal.com:* *.atlassolutions.com attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self' chrome-extension://boadgeojelhgndaghljhdicfkmllpafd chrome-extension://dliochdbjfkdbacpmhlcpmleaejidimm;
Strict-Transport-Security max-age=15552000; preload
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

content-security-policy
default-src * data: blob:;script-src *.facebook.com *.fbcdn.net *.facebook.net *.google-analytics.com *.virtualearth.net *.google.com 127.0.0.1:* *.spotilocal.com:* 'unsafe-inline' 'unsafe-eval' fbstatic-a.akamaihd.net fbcdn-static-b-a.akamaihd.net *.atlassolutions.com blob: data: 'self';style-src data: blob: 'unsafe-inline' *;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net *.spotilocal.com:* *.akamaihd.net wss://*.facebook.com:* https://fb.scanandcleanlocal.com:* *.atlassolutions.com attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self' chrome-extension://boadgeojelhgndaghljhdicfkmllpafd chrome-extension://dliochdbjfkdbacpmhlcpmleaejidimm;
content-encoding
gzip
x-content-type-options
nosniff
status
200
vary
Origin, Accept-Encoding
x-xss-protection
0
pragma
no-cache
x-fb-debug
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date
Wed, 25 Apr 2018 18:25:44 GMT
expect-ct
max-age=10, report-uri="http://reports.fb.com/expectct/"
strict-transport-security
max-age=15552000; preload
access-control-allow-methods
OPTIONS
content-type
image/gif
access-control-allow-origin
https://www.facebook.com
access-control-expose-headers
X-FB-Debug, X-Loader-Length
cache-control
private, no-cache, no-store, must-revalidate
access-control-allow-credentials
true
expires
Sat, 01 Jan 2000 00:00:00 GMT
/
www.facebook.com/tr/ 		44 B
245 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://www.facebook.com/tr/?id=1735692093320310&ev=Microdata&dl=https%3A%2F%2Fwww.duolingo.com%2F&rl=&if=false&ts=1524680745418&cd[Schema.org]=%5B%5D&cd[OpenGraph]=%7B%22og%3Atype%22%3A%22website%22%2C%22og%3Aurl%22%3A%22https%3A%2F%2Fwww.duolingo.com%2F%22%2C%22og%3Aimage%22%3A%22https%3A%2F%2Fwww.duolingo.com%2Fimages%2Ffacebook%2Fduo200.png%22%2C%22og%3Asite_name%22%3A%22Duolingo%22%2C%22og%3Atitle%22%3A%22Learn%20a%20language%20for%20free%22%2C%22og%3Adescription%22%3A%22Learn%20languages%20by%20playing%20a%20game.%20It%27s%20100%25%20free%2C%20fun%2C%20and%20scientifically%20proven%20to%20work.%22%7D&cd[Meta]=%7B%22title%22%3A%22Duolingo%3A%20Learn%20Spanish%2C%20French%20and%20other%20languages%20for%20free%22%2C%22meta%3Adescription%22%3A%22Duolingo%20is%20the%20world%27s%20most%20popular%20way%20to%20learn%20a%20language.%20It%27s%20100%25%20free%2C%20fun%20and%20science-based.%20Practice%20online%20on%20duolingo.com%20or%20on%20the%20apps!%22%2C%22meta%3Akeywords%22%3A%22learn%2C%20spanish%2C%20german%2C%20french%2C%20portuguese%2C%20italian%2C%20english%2C%20free%2C%20lessons%2C%20course%2C%20language%2C%20study%2C%20flashcards%22%7D&cd[DataLayer]=%5B%5D&sw=1600&sh=1200&v=2.8.14&r=stable&ec=2&o=28&it=1524680744512&es=automatic
Protocol
SPDY
Server
185.60.216.35 , Ireland, ASN32934 (FACEBOOK - Facebook, Inc., US),
Reverse DNS
Software
proxygen-bolt /
Resource Hash
10d8d42d73a02ddb877101e72fbfa15a0ec820224d97cedee4cf92d571be5caa

Request headers

Referer
https://www.duolingo.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36

Response headers

date
Wed, 25 Apr 2018 18:25:45 GMT
last-modified
Fri, 21 Dec 2012 00:00:01 GMT
server
proxygen-bolt
content-type
image/gif
status
200
cache-control
no-cache, must-revalidate, max-age=0
content-length
44
expires
Wed, 25 Apr 2018 18:25:45 GMT
config
duolingotest.zendesk.com/embeddable/ Frame 8664 		399 B
1016 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://duolingotest.zendesk.com/embeddable/config
Requested by
Host: assets.zendesk.com
URL: https://assets.zendesk.com/embeddable_framework/main.js
Protocol
HTTP/1.1
Server
52.34.200.91 Boardman, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
ec2-52-34-200-91.us-west-2.compute.amazonaws.com
Software
nginx /
Resource Hash
d96920f1b8b265ba463948873374cb3ba4d0f7f02ed1f59c4c5e90ed7c892e4f
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com

Response headers

Date
Wed, 25 Apr 2018 18:25:45 GMT
Content-Encoding
gzip
X-Content-Type-Options
nosniff
Transfer-Encoding
chunked
P3P
CP="NOI DSP COR NID ADMa OPTa OUR NOR"
Status
200 OK
Access-Control-Max-Age
1728000
Access-Control-Allow-Methods
GET
Connection
keep-alive
X-Request-Id
4c4ef6ee-b4e6-4204-c207-067c7f868c24
X-Runtime
0.035449
Server
nginx
ETag
W/"5f8aeb32b9e3e67bb22a04fd2c028edd"
Vary
Origin
Strict-Transport-Security
max-age=31536000;
Content-Type
application/json; charset=utf-8
Access-Control-Allow-Origin
https://www.duolingo.com
Access-Control-Expose-Headers
Cache-Control
max-age=0, private, must-revalidate
Access-Control-Allow-Credentials
true
X-Zendesk-Origin-Server
embeddable12.pod13.usw2.zdsys.com
embeddable_blip
duolingotest.zendesk.com/ Frame 8664 		0
249 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://duolingotest.zendesk.com/embeddable_blip?type=pageView&data=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
Requested by
Host: assets.zendesk.com
URL: https://assets.zendesk.com/embeddable_framework/main.js
Protocol
HTTP/1.1
Server
52.34.200.91 Boardman, United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
ec2-52-34-200-91.us-west-2.compute.amazonaws.com
Software
nginx /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/65.0.3325.181 Safari/537.36
Referer
https://www.duolingo.com/
Origin
https://www.duolingo.com

Response headers

Access-Control-Allow-Origin
https://www.duolingo.com
Date
Wed, 25 Apr 2018 18:25:46 GMT
Server
nginx
Connection
keep-alive
Content-Length
0
Content-Type
application/octet-stream, text/html; charset=utf-8

Verdicts & Comments Add Verdict or Comment

48 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| _gaq function| zEmbed function| zE object| _rollbarConfig object| _rollbarShims object| _rollbarWrappedError function| _rollbarURH object| Rollbar function| rollbar object| duo object| _gat object| gaGlobal function| webpackJsonp function| $ object| Placeholders object| sorttable function| SoundManager2015 object| soundManager2015 number| _rollbarStartTime boolean| _rollbarDidLoad boolean| _rollbarInitialized function| jQuery function| _ object| in_house_localized_abbrevs function| fbAsyncInit function| fbq function| _fbq function| loadGoogleClientLibraries object| soundManager object| jQuery171009042741120988196 object| gapi object| ___jsl object| slider object| FB object| osapi object| gadgets object| shindig object| pos object| googleapis object| iframer function| ToolbarApi object| iframes function| IframeBase function| Iframe function| IframeProxy function| IframeWindow object| __gapi_jstiming__ function| $zopim

0 Cookies

2 Console Messages

Source Level URL
Text
console-api log URL: https://cdnjs.cloudflare.com/ajax/libs/rollbar.js/2.2.0/rollbar.min.js(Line 2)
Message:
Duolingo is hiring software engineers: https://www.duolingo.com/jobs
console-api info URL: https://assets.zendesk.com/embeddable_framework/main.js(Line 1)
Message:
Our embeddable contains third-party, open source software and/or libraries. To view them and their license terms, go to http://goto.zendesk.com/embeddable-legal-notices

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
X-Frame-Options SAMEORIGIN

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.

api.mixpanel.com
apis.google.com
assets.zendesk.com
cdnjs.cloudflare.com
connect.facebook.net
d3kwyfyztuo0xs.cloudfront.net
d7mj4aqfscim2.cloudfront.net
duolingotest.zendesk.com
ljknv3sref.execute-api.us-east-1.amazonaws.com
ssl.google-analytics.com
stats.g.doubleclick.net
www.duolingo.com
www.facebook.com
www.google.com
www.google.nl
104.19.194.102
159.122.19.133
159.122.19.188
172.217.21.200
172.217.22.110
172.217.22.99
173.194.76.155
185.60.216.19
185.60.216.35
52.34.200.91
52.85.173.176
52.85.173.232
52.85.177.217
52.85.177.222
54.175.208.130
74.125.232.48
93.184.220.110
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5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
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c638cc33358ee20f44e09f2aefdd2f3aeda5928179013abdc6274344b090f498
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dfb3f7f372515320eccf85df5499971ed9db162eb48cf0b57550ad438019e386
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ec078f79e27c3ad2f41eb5340fa93539fa32eaad4eb193ada5c23a497d3b939c
ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629
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