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2a04:fa87:fffd::c000:42ec  Public Scan

Go To Rescan Add Verdict Report
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Submission: On May 22 via api from LU — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 7 IPs in 3 countries across 5 domains to perform 37 HTTP transactions. The main IP is 2a04:fa87:fffd::c000:42ec, located in Ireland and belongs to AUTOMATTIC, US. The main domain is engineering.fb.com. The Cisco Umbrella rank of the primary domain is 760612.
TLS certificate: Issued by DigiCert SHA2 High Assurance Server CA on October 30th 2023. Valid for: a year.
This is the only time engineering.fb.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

31    2a04:fa87:fffd::c000:42ec (Ireland)

ASN2635 (AUTOMATTIC, US)
engineering.fb.com
1    2a00:1450:4001:828::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.googleoptimize.com
1    2606:7100:1:67::26 (United States)

ASN21581 (M5HOSTING, US)
news.ycombinator.com
1    2a03:2880:f084:105:face:b00c:0:3 (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)
connect.facebook.net
1    157.240.252.13 (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)
PTR: xx-fbcdn-shv-01-fra3.fbcdn.net
connect.facebook.net
1    2a03:2880:f177:83:face:b00c:0:25de (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)
www.facebook.com
Apex Domain
Subdomains		 Transfer
31 fb.com
engineering.fb.com — Cisco Umbrella Rank: 760612
952 KB
2 facebook.net
connect.facebook.net — Cisco Umbrella Rank: 183
89 KB
1 facebook.com
www.facebook.com — Cisco Umbrella Rank: 101
1 ycombinator.com
news.ycombinator.com — Cisco Umbrella Rank: 56108
513 B
1 googleoptimize.com
www.googleoptimize.com — Cisco Umbrella Rank: 2828
63 KB
37 5
Domain Requested by
31 engineering.fb.com engineering.fb.com
2 connect.facebook.net engineering.fb.com
connect.facebook.net
1 www.facebook.com connect.facebook.net
1 news.ycombinator.com engineering.fb.com
1 www.googleoptimize.com engineering.fb.com
37 5
Subject Issuer Validity Valid
engineering.fb.com
DigiCert SHA2 High Assurance Server CA		 2023-10-30 -
2024-10-29		 a year crt.sh
*.google-analytics.com
WR2		 2024-05-06 -
2024-07-29		 3 months crt.sh
news.ycombinator.com
DigiCert Global G2 TLS RSA SHA256 2020 CA1		 2023-08-27 -
2024-09-10		 a year crt.sh
*.facebook.com
DigiCert SHA2 High Assurance Server CA		 2024-03-01 -
2024-05-30		 3 months crt.sh

This page contains 2 frames:

Primary Page: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Frame ID: EFF849C9F8E018FE89907B76DF669895
Requests: 37 HTTP requests in this frame

Frame: https://www.facebook.com/v2.6/plugins/like.php?action=like&app_id=&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Dfba97da6ebf915015%26domain%3Dengineering.fb.com%26is_canvas%3Dfalse%26origin%3Dhttps%253A%252F%252Fengineering.fb.com%252Fffc68da81f7f749b5%26relation%3Dparent.parent&container_width=904&href=https%3A%2F%2Fengineering.fb.com%2F2021%2F10%2F04%2Fnetworking-traffic%2Foutage%2F&layout=standard&locale=en_US&sdk=joey&share=true&size=small&width=
Frame ID: C90918EB46A6ABC4BD93F36310A11EE2
Requests: 1 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Update about the October 4th outage - Engineering at Meta

Detected technologies

Overall confidence: 100%
Detected patterns
  • <link rel=["']stylesheet["'] [^>]+/wp-(?:content|includes)/
  • /wp-(?:content|includes)/
Overall confidence: 100%
Detected patterns
  • //connect\.facebook\.([a-z]+)/[^/]*/[a-z]*\.js
Overall confidence: 100%
Detected patterns
  • googleoptimize\.com/optimize\.js
Overall confidence: 100%
Detected patterns
  • prism\.js

Page Statistics

37
Requests

97 %
HTTPS

83 %
IPv6

5
Domains

5
Subdomains

7
IPs

3
Countries

1113 kB
Transfer

2375 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

37 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
engineering.fb.com/2021/10/04/networking-traffic/outage/ 		81 KB
18 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx / WordPress VIP <https://wpvip.com>
Resource Hash
7b19e802796fb6d24c2b111c679cd1f13a9f475a1b1fa3240f2ea123fff3c9fb
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

accept-ranges
bytes
cache-control
max-age=300, must-revalidate
content-encoding
br
content-type
text/html; charset=UTF-8
date
Wed, 22 May 2024 21:21:43 GMT
host-header
a9130478a60e5f9135f765b23f26593b
link
<https://engineering.fb.com/wp-json/>; rel="https://api.w.org/" <https://engineering.fb.com/wp-json/wp/v2/posts/18154>; rel="alternate"; type="application/json" <https://wp.me/sa0Lhq-outage>; rel=shortlink
server
nginx
strict-transport-security
max-age=31536000;includeSubdomains;preload
vary
Accept-Encoding, accept, content-type
x-cache
EXPIRED
x-hacker
If you're reading this, you should visit wpvip.com/careers and apply to join the fun, mention this header.
x-powered-by
WordPress VIP <https://wpvip.com>
x-rq
ams8 111 253 443
optimize.min.js
engineering.fb.com/wp-content/themes/code-fb-com/dist/js/ 		4 KB
1 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/dist/js/optimize.min.js
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
93708a2609119448339b84f03a2c3e825ecd6189e921b527f6fac23793252125
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 22 Aug 2023 12:44:53 GMT
server
nginx
x-rq
ams8 111 254 443
etag
W/"64e4adc5-e7d"
x-cache
HIT
content-type
application/javascript
cache-control
max-age=31536000
accept-ranges
bytes
optimize.js
www.googleoptimize.com/ 		174 KB
63 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googleoptimize.com/optimize.js?id=OPT-TPNDQC5
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:828::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
957513da6a6a3a8e0a9d923285d8b53c6a8664bec2eacd612a3300d0b594388b
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
content-encoding
br
strict-transport-security
max-age=31536000; includeSubDomains
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
64301
x-xss-protection
0
last-modified
Wed, 22 May 2024 21:00:00 GMT
server
Google Tag Manager
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
access-control-allow-headers
Cache-Control
expires
Wed, 22 May 2024 21:21:43 GMT
style.min.css
engineering.fb.com/wp-includes/css/dist/block-library/ 		111 KB
15 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/wp-includes/css/dist/block-library/style.min.css?m=1715117951g
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
98cecf88a23542fa047ce46eedb650b5c5128761ed4386c0977b847094ddfa20
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 07 May 2024 21:39:11 GMT
server
nginx
x-rq
ams8 111 254 443
etag
W/"663a9f7f-1bae5"
x-cache
HIT
content-type
text/css
cache-control
max-age=31536000
accept-ranges
bytes
/
engineering.fb.com/_static/ 		15 KB
4 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/_static/??-eJzTLy/QzcxLzilNSS3WzyrWz01NyUxMzUnNTc0rQeEU5CRWphbp5qSmJyZX6uVm5uklFxfr6OPTDpRD5sM02efaGpobmhoamluaGgEARKsu4g==
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
3d2c10cf69410c10177fc6e56937d05151b182841fa6aee36f651d587d91fbb8
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 07 May 2024 21:39:12 GMT
server
nginx
x-rq
ams8 111 254 443
x-cache
HIT
content-type
text/css;charset=utf-8
cache-control
max-age=31536000
accept-ranges
bytes
related-posts-block-styles.min.css
engineering.fb.com/wp-content/mu-plugins/search/elasticpress/dist/css/ 		222 B
456 B 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/wp-content/mu-plugins/search/elasticpress/dist/css/related-posts-block-styles.min.css?m=1715115084g
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
9790593b4acafa770479511a888914881594976c5dcad980c82e781c5625ff44
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
ams8 111 254 443
last-modified
Tue, 07 May 2024 20:51:24 GMT
server
nginx
etag
"663a944c-de"
x-cache
HIT
content-type
text/css
cache-control
max-age=31536000
accept-ranges
bytes
content-length
222
/
engineering.fb.com/_static/ 		597 KB
87 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/_static/??-eJyVj90KwjAMRl/ILmwTxy7ER5Ga1K7aP5YW8e1t5wTFG71LDjlfErhFgcEn5RNEm7XxDAVpinPlXDkZTlDJChpk3sCbmCblFAMGUuJ8Ktg9nTIHOBlLYplonPFfrsvitfeiUpR4FW3fbMEFyraE8iRnRZLovpTG658jjsYjcEAjrbBBB/5o/rqmfrKC6hzcvh3aXTf23Tg8ABQ2dWM=
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
b4415593fc732c115f6a500e5a57732b608d150e538980ce3ed7e695b94050bf
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 21 May 2024 12:08:17 GMT
server
nginx
x-rq
ams8 111 254 443
vary
Accept-Encoding
x-cache
HIT
content-type
text/css;charset=utf-8
cache-control
max-age=31536000
accept-ranges
bytes
gdprconsent.js
engineering.fb.com/wp-content/plugins/wp-gdpr-consent/dist/ 		7 KB
3 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/wp-content/plugins/wp-gdpr-consent/dist/gdprconsent.js?ver=2.0.0
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
28d7cefcb8d905642b38655f85c9c3ff9ab995b8ccb9e4d4533ff0be0f4df530
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 22 Aug 2023 12:44:53 GMT
server
nginx
x-rq
ams8 111 254 443
etag
W/"64e4adc5-1b00"
x-cache
HIT
content-type
application/javascript
cache-control
max-age=31536000
accept-ranges
bytes
/
engineering.fb.com/_static/ 		118 KB
41 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/_static/??-eJzTLy/QzcxLzilNSS3WzwKiwtLUokoopZebmaeXVayjj0+Rbm5melFiSSqy4uT8vJLUvBL9kozUXKCW0ryU1KLikqLEApDugvyCgtQiqHL7XFtDc0NTQ0NzS1OjLAD35jQD
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
3bd47bed84470b3207347025097bc09de1d98f29b1de9e7f7539819f55a2f307
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 07 May 2024 21:39:12 GMT
server
nginx
x-rq
ams8 111 254 443
x-cache
HIT
content-type
application/javascript
cache-control
max-age=31536000
accept-ranges
bytes
FacebookReader-Medium.woff2
engineering.fb.com/wp-content/themes/code-fb-com/fonts/ 		35 KB
35 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/fonts/FacebookReader-Medium.woff2
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
3308641936bc2eac40fb9c9df0cfd27211c5a59bfb7be229f4f6b152b0e07a9d
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Origin
https://engineering.fb.com
Accept-Language
de-DE,de;q=0.9;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
ams8 111 253 443
last-modified
Tue, 22 Aug 2023 12:44:53 GMT
server
nginx
etag
"64e4adc5-8aa0"
x-cache
HIT
content-type
application/font-woff2
access-control-allow-origin
*
access-control-allow-methods
GET, HEAD
cache-control
max-age=300, must-revalidate
accept-ranges
bytes
content-length
35488
FacebookReader-Regular.woff2
engineering.fb.com/wp-content/themes/code-fb-com/fonts/ 		34 KB
35 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/fonts/FacebookReader-Regular.woff2
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
98e066f80b90afe0dd247b303b1be67b9870fae8fac6df38bcb03bc75af36478
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Origin
https://engineering.fb.com
Accept-Language
de-DE,de;q=0.9;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:43 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
ams8 111 254 443
last-modified
Tue, 22 Aug 2023 12:44:53 GMT
server
nginx
etag
"64e4adc5-89a4"
x-cache
HIT
content-type
application/font-woff2
access-control-allow-origin
*
access-control-allow-methods
GET, HEAD
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Software
/
Resource Hash
Security Headers
Name Value
Content-Security-Policy default-src data: blob: 'self' https://*.fbsbx.com 'unsafe-inline' *.facebook.com *.fbcdn.net 'unsafe-eval';script-src *.facebook.com *.fbcdn.net *.facebook.net 127.0.0.1:* 'unsafe-inline' blob: data: 'self' connect.facebook.net 'unsafe-eval' https://*.google-analytics.com *.google.com;style-src *.fbcdn.net data: *.facebook.com 'unsafe-inline' https://fonts.googleapis.com;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net wss://*.facebook.com:* wss://*.whatsapp.com:* wss://*.fbcdn.net attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self' http://localhost:3103 wss://gateway.facebook.com wss://edge-chat.facebook.com wss://snaptu-d.facebook.com wss://kaios-d.facebook.com/ v.whatsapp.net *.fbsbx.com *.fb.com https://*.google-analytics.com;font-src data: *.facebook.com *.fbcdn.net *.fbsbx.com https://fonts.gstatic.com;img-src *.fbcdn.net *.facebook.com data: https://*.fbsbx.com facebook.com *.cdninstagram.com fbsbx.com fbcdn.net connect.facebook.net *.carriersignal.info blob: android-webview-video-poster: *.whatsapp.net *.fb.com *.oculuscdn.com *.tenor.co *.tenor.com *.giphy.com https://paywithmybank.com/ https://*.paywithmybank.com/ https://www.googleadservices.com https://googleads.g.doubleclick.net https://*.google-analytics.com;media-src *.cdninstagram.com blob: *.fbcdn.net *.fbsbx.com www.facebook.com *.facebook.com data: *.tenor.co *.tenor.com https://*.giphy.com;frame-src *.facebook.com *.fbsbx.com fbsbx.com data: www.instagram.com *.fbcdn.net https://paywithmybank.com/ https://*.paywithmybank.com/ https://www.googleadservices.com https://googleads.g.doubleclick.net https://www.google.com https://td.doubleclick.net *.google.com *.doubleclick.net;worker-src blob: *.facebook.com data:;block-all-mixed-content;upgrade-insecure-requests;
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

alt-svc
h3=":443"; ma=86400
cache-control
private, no-cache, no-store, must-revalidate
content-length
0
content-security-policy
default-src data: blob: 'self' https://*.fbsbx.com 'unsafe-inline' *.facebook.com *.fbcdn.net 'unsafe-eval';script-src *.facebook.com *.fbcdn.net *.facebook.net 127.0.0.1:* 'unsafe-inline' blob: data: 'self' connect.facebook.net 'unsafe-eval' https://*.google-analytics.com *.google.com;style-src *.fbcdn.net data: *.facebook.com 'unsafe-inline' https://fonts.googleapis.com;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net wss://*.facebook.com:* wss://*.whatsapp.com:* wss://*.fbcdn.net attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self' http://localhost:3103 wss://gateway.facebook.com wss://edge-chat.facebook.com wss://snaptu-d.facebook.com wss://kaios-d.facebook.com/ v.whatsapp.net *.fbsbx.com *.fb.com https://*.google-analytics.com;font-src data: *.facebook.com *.fbcdn.net *.fbsbx.com https://fonts.gstatic.com;img-src *.fbcdn.net *.facebook.com data: https://*.fbsbx.com facebook.com *.cdninstagram.com fbsbx.com fbcdn.net connect.facebook.net *.carriersignal.info blob: android-webview-video-poster: *.whatsapp.net *.fb.com *.oculuscdn.com *.tenor.co *.tenor.com *.giphy.com https://paywithmybank.com/ https://*.paywithmybank.com/ https://www.googleadservices.com https://googleads.g.doubleclick.net https://*.google-analytics.com;media-src *.cdninstagram.com blob: *.fbcdn.net *.fbsbx.com www.facebook.com *.facebook.com data: *.tenor.co *.tenor.com https://*.giphy.com;frame-src *.facebook.com *.fbsbx.com fbsbx.com data: www.instagram.com *.fbcdn.net https://paywithmybank.com/ https://*.paywithmybank.com/ https://www.googleadservices.com https://googleads.g.doubleclick.net https://www.google.com https://td.doubleclick.net *.google.com *.doubleclick.net;worker-src blob: *.facebook.com data:;block-all-mixed-content;upgrade-insecure-requests;
content-type
text/html;charset=utf-8
cross-origin-embedder-policy-report-only
require-corp;report-to="coep_report"
cross-origin-opener-policy
same-origin-allow-popups;report-to="coop_report"
date
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expires
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pragma
no-cache
report-to
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reporting-endpoints
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x-content-type-options
nosniff
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x-fb-debug
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x-xss-protection
0
favicon.ico
engineering.fb.com/wp-content/themes/code-fb-com/ 		5 KB
2 KB 		Other
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/favicon.ico
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
Reverse DNS
Software
nginx /
Resource Hash
b96d739c3a8ac4ef0b34212c8a2b7f23dcb7b039e0dd14ef170d8e9232972bf7
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Accept-Language
de-DE,de;q=0.9;q=0.9
Referer
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36 OPR/80.0.4170.63

Response headers

date
Wed, 22 May 2024 21:21:44 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 22 Aug 2023 12:44:53 GMT
server
nginx
x-rq
ams8 111 254 443
etag
W/"64e4adc5-15b6"
x-cache
HIT
content-type
image/x-icon
cache-control
max-age=31536000
accept-ranges
bytes

Verdicts & Comments Add Verdict or Comment

66 JavaScript Global Variables

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

object| 0 object| _wpemojiSettings function| _typeof undefined| FBPrevNextLinkPosition function| generateDetailsMarkup function| generateLinkThumbnailMarkup function| generateLinkMarkup function| insertPreviousNextLinks function| createMoreArticles function| FBPrevNextLinkPositionMiddle function| FBPrevNextLinkPositionTop object| _domassistevents function| gdprSafeTrack undefined| $ function| jQuery function| Popper object| WPCOM_sharing_counts object| loadmore_params object| search_params object| more_articles function| LazyLoad function| createLightbox function| createFacebookPlayer function| checkFacebookUrl function| twitterSharePopup function| fbShare function| shareHackerNews function| twitterFollow function| tabHandler function| loadPosts function| newPostsInit object| jQuerynavbarSearchbarToggler object| jQuerynavbarMenuToggler object| jQuerynavbarMobileSearch object| jQuerysearchContainer object| jQuerynavContainer function| hideSearchContainer function| showSearchContainer function| hideNavContainer function| showNavContainer function| truncateTitle function| validateAndSanitize function| jobEvents function| jobEventTracking function| readMoreInTracking function| videoAjaxHandler function| createVideoPlayer function| resetPlaylist function| setPlaylists function| setActivePlaylist function| categoryDropdownInit function| videoInit object| _self object| Prism function| DOMPurify object| bootstrap object| sharing_js_options object| WPCOMSharing undefined| windowOpen object| google_tag_manager object| google_tag_data object| dataLayer object| twemoji object| wp object| FB object| __buffer

0 Cookies

Security Headers

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

Header Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

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.

connect.facebook.net
engineering.fb.com
news.ycombinator.com
www.facebook.com
www.googleoptimize.com
157.240.252.13
2606:7100:1:67::26
2a00:1450:4001:828::200e
2a03:2880:f084:105:face:b00c:0:3
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