Submitted URL: http://facebookmicrosites.github.io/
Effective URL: https://engineering.fb.com/
Submission: On August 08 via manual from US — Scanned from DE

Summary

This website contacted 5 IPs in 3 countries across 5 domains to perform 40 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.
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

Apex Domain
Subdomains
Transfer
35 fb.com
code.fb.com
engineering.fb.com
965 KB
2 facebook.net
connect.facebook.net — Cisco Umbrella Rank: 236
93 KB
2 github.io
facebookmicrosites.github.io
1 KB
1 googleoptimize.com
www.googleoptimize.com — Cisco Umbrella Rank: 5561
65 KB
1 facebook.com
code.facebook.com
847 B
40 5
Domain Requested by
34 engineering.fb.com engineering.fb.com
2 connect.facebook.net engineering.fb.com
connect.facebook.net
2 facebookmicrosites.github.io
1 www.googleoptimize.com engineering.fb.com
1 code.fb.com 1 redirects
1 code.facebook.com 1 redirects
40 6
Subject Issuer Validity Valid
*.github.io
DigiCert Global G2 TLS RSA SHA256 2020 CA1
2024-03-15 -
2025-03-14
a year crt.sh
engineering.fb.com
DigiCert SHA2 High Assurance Server CA
2023-10-30 -
2024-10-29
a year crt.sh
*.google-analytics.com
WR2
2024-07-30 -
2024-10-22
3 months crt.sh
*.facebook.com
DigiCert SHA2 High Assurance Server CA
2024-05-18 -
2024-08-16
3 months crt.sh

This page contains 1 frames:

Primary Page: https://engineering.fb.com/
Frame ID: 1CA16730AF47CC1E72A76BFC5D9A8C47
Requests: 40 HTTP requests in this frame

Screenshot

Page Title

Engineering at Meta - Engineering at Meta Blog

Page URL History Show full URLs

  1. http://facebookmicrosites.github.io/ HTTP 307
    https://facebookmicrosites.github.io/ Page URL
  2. https://code.facebook.com/ HTTP 301
    https://code.fb.com/ HTTP 301
    https://engineering.fb.com/ Page URL

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

40
Requests

98 %
HTTPS

100 %
IPv6

5
Domains

6
Subdomains

5
IPs

3
Countries

1124 kB
Transfer

2357 kB
Size

0
Cookies

Page URL History

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

  1. http://facebookmicrosites.github.io/ HTTP 307
    https://facebookmicrosites.github.io/ Page URL
  2. https://code.facebook.com/ HTTP 301
    https://code.fb.com/ HTTP 301
    https://engineering.fb.com/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 0
  • http://facebookmicrosites.github.io/ HTTP 307
  • https://facebookmicrosites.github.io/

40 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
/
facebookmicrosites.github.io/
Redirect Chain
  • http://facebookmicrosites.github.io/
  • https://facebookmicrosites.github.io/
113 B
532 B
Document
General
Full URL
https://facebookmicrosites.github.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:50c0:8001::153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
GitHub.com /
Resource Hash
867954431ea93425cb69b7fcbbfe5cb30155fa750a561bd222825886d3d77bff
Security Headers
Name Value
Strict-Transport-Security max-age=31557600

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

accept-ranges
bytes
access-control-allow-origin
*
age
0
cache-control
max-age=600
content-length
113
content-type
text/html; charset=utf-8
date
Thu, 08 Aug 2024 20:51:08 GMT
etag
"5a7c83e9-71"
expires
Thu, 08 Aug 2024 20:06:14 GMT
last-modified
Thu, 08 Feb 2018 17:07:53 GMT
permissions-policy
interest-cohort=()
server
GitHub.com
strict-transport-security
max-age=31557600
vary
Accept-Encoding
via
1.1 varnish
x-cache
HIT
x-cache-hits
0
x-fastly-request-id
70aa7a0b895f1d11b4aad3fde351938f7c2b8a51
x-github-request-id
DD18:3621F8:5C50993:5E9EAB7:66B522DD
x-proxy-cache
MISS
x-served-by
cache-fra-etou8220140-FRA
x-timer
S1723150268.953596,VS0,VE111

Redirect headers

Location
https://facebookmicrosites.github.io/
Non-Authoritative-Reason
HttpsUpgrades
Primary Request /
engineering.fb.com/
Redirect Chain
  • https://code.facebook.com/
  • https://code.fb.com/
  • https://engineering.fb.com/
72 KB
15 KB
Document
General
Full URL
https://engineering.fb.com/
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
301bdc3a2065deb1494b23507686b1cbe2044a872a56d7939881bc3ff0f19a42
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://facebookmicrosites.github.io/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

accept-ranges
bytes
cache-control
max-age=300, must-revalidate
content-encoding
br
content-type
text/html; charset=UTF-8
date
Thu, 08 Aug 2024 20:51:08 GMT
host-header
a9130478a60e5f9135f765b23f26593b
link
<https://engineering.fb.com/wp-json/>; rel="https://api.w.org/" <https://wp.me/a0Lhq>; rel=shortlink
server
nginx
strict-transport-security
max-age=31536000;includeSubdomains;preload
vary
Accept-Encoding, accept, content-type
x-cache
HIT
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
hhn2 111 253 443

Redirect headers

content-type
text/html; charset=utf-8
date
Thu, 08 Aug 2024 20:51:08 GMT
location
https://engineering.fb.com/
server
nginx
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-cache
HIT
x-rq
hhn1 111 253 443
favicon.ico
facebookmicrosites.github.io/
1 KB
707 B
Other
General
Full URL
https://facebookmicrosites.github.io/favicon.ico
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:50c0:8001::153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
GitHub.com /
Resource Hash
Security Headers
Name Value
Strict-Transport-Security max-age=31557600

Request headers

Referer
https://facebookmicrosites.github.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

x-proxy-cache
MISS
x-fastly-request-id
b710f32a702aaab3c0b5ab377b58ddede1c157ac
strict-transport-security
max-age=31557600
content-encoding
gzip
via
1.1 varnish
date
Thu, 08 Aug 2024 20:51:08 GMT
age
3294
x-cache
HIT
content-length
559
x-served-by
cache-fra-etou8220140-FRA
server
GitHub.com
x-github-request-id
53C2:6DDDE:60DC192:634A3FD:66B522DD
x-timer
S1723150268.104966,VS0,VE2
etag
W/"5a7c83e9-46e"
vary
Accept-Encoding
content-type
text/html; charset=utf-8
access-control-allow-origin
*
permissions-policy
interest-cohort=()
accept-ranges
bytes
x-cache-hits
0
optimize.js
www.googleoptimize.com/
179 KB
65 KB
Script
General
Full URL
https://www.googleoptimize.com/optimize.js?id=OPT-TPNDQC5
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:810::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
70e9a8b058613fd573f5b512abf961b948d353cac4434812d1ffb0f2f54f4209
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 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
65932
x-xss-protection
0
last-modified
Thu, 08 Aug 2024 19:55:49 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
Thu, 08 Aug 2024 20:51:08 GMT
style.min.css
engineering.fb.com/wp-includes/css/dist/block-library/
110 KB
15 KB
Stylesheet
General
Full URL
https://engineering.fb.com/wp-includes/css/dist/block-library/style.min.css?m=1721926675g
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
885c89e82436cfa3d0a0a5a9b2f6be6e1503457c810cc88ed2c09b4570ae9fd6
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Thu, 25 Jul 2024 16:57:55 GMT
server
nginx
x-rq
hhn2 111 253 443
etag
W/"66a28413-1b723"
vary
Accept-Encoding
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
Full URL
https://engineering.fb.com/_static/??-eJzTLy/QzcxLzilNSS3WzyrWz01NyUxMzUnNTc0rQeEU5CRWphbp5qSmJyZX6uVm5uklFxfr6OPTDpRD5sM02efaGpobGVoamZmZmwEARMcu6g==
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Thu, 25 Jul 2024 16:57:56 GMT
server
nginx
x-rq
hhn2 111 254 443
vary
Accept-Encoding
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
Full URL
https://engineering.fb.com/wp-content/mu-plugins/search/elasticpress/dist/css/related-posts-block-styles.min.css?m=1721767167g
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 253 443
last-modified
Tue, 23 Jul 2024 20:39:27 GMT
server
nginx
etag
"66a014ff-de"
x-cache
HIT
content-type
text/css
cache-control
max-age=31536000
accept-ranges
bytes
content-length
222
/
engineering.fb.com/_static/
568 KB
77 KB
Stylesheet
General
Full URL
https://engineering.fb.com/_static/??-eJxlzdEKwjAMheEXMg2rWPFCfBZN41ZdumIy9vq2c4Lg7cf5ObgUoCkbZ8Myzn3KipX6WF7NtXlMathkA0eqO/wJbWBhRZoiw/1WWT5N3SENaYywLpyk/NfKDN/fB1u50hO6vQtru0FrLnLujt6fQvAH/wYk6kFb
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
774416bcd453f0279001ba0334497a8afcbeae9a0c9b2ea2b81de91fcb6cdb06
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 06 Aug 2024 17:44:12 GMT
server
nginx
x-rq
hhn2 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
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/
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

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
x-rq
hhn2 111 253 443
etag
W/"668e844c-1b00"
vary
Accept-Encoding
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
Full URL
https://engineering.fb.com/_static/??-eJzTLy/QzcxLzilNSS3WzwKiwtLUokoopZebmaeXVayjj0+Rbm5melFiSSqy4uT8vJLUvBL9kozUXKCW0ryU1KLikqLEApDugvyCgtQiqHL7XFtDcyNDSyMzM3OzLAD4CjQL
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Thu, 25 Jul 2024 16:57:56 GMT
server
nginx
x-rq
hhn2 111 253 443
vary
Accept-Encoding
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
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/
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/
Origin
https://engineering.fb.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 254 443
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
etag
"668e844c-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
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/
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/
Origin
https://engineering.fb.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 254 443
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
etag
"668e844c-89a4"
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
35236
Optimistic_Display_W_Md.woff2
engineering.fb.com/wp-content/themes/code-fb-com/fonts/
12 KB
12 KB
Font
General
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/fonts/Optimistic_Display_W_Md.woff2
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
969789ee1556ccb2f83047a196af6e552ad40a39f1505d86b576c7453eba216c
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
Origin
https://engineering.fb.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 254 443
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
etag
"668e844c-3048"
x-cache
HIT
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Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 109 142 443
last-modified
Tue, 23 Jul 2024 13:52:54 GMT
server
nginx
etag
"b9fcd2e72e55f302"
vary
Accept
x-cache
HIT
content-type
image/webp
cache-control
max-age=31536000
accept-ranges
bytes, bytes
content-length
61418
meta_logo.png
engineering.fb.com/wp-content/themes/code-fb-com/img/
14 KB
14 KB
Image
General
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/img/meta_logo.png
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
50e7e31d30ee2ce7b70c0fa524c2c270245a42fc1f6842a24d73b2d6e45d0e00
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 253 443
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
etag
"668e844c-3791"
x-cache
HIT
content-type
image/png
cache-control
max-age=31536000
accept-ranges
bytes
content-length
14225
android.png
engineering.fb.com/wp-content/themes/code-fb-com/img/
2 KB
2 KB
Image
General
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/img/android.png
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
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Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 254 443
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
etag
"668e844c-911"
x-cache
HIT
content-type
image/png
cache-control
max-age=31536000
accept-ranges
bytes
content-length
2321
ios.png
engineering.fb.com/wp-content/themes/code-fb-com/img/
1 KB
1 KB
Image
General
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/img/ios.png
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
a307103cb2b2b6949644369c9a229f412901c9c8546fd677459f14948a02a629
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 254 443
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
etag
"668e844c-421"
x-cache
HIT
content-type
image/png
cache-control
max-age=31536000
accept-ranges
bytes
content-length
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web.png
engineering.fb.com/wp-content/themes/code-fb-com/img/
487 B
722 B
Image
General
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/img/web.png
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
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Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 254 443
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
etag
"668e844c-1e7"
x-cache
HIT
content-type
image/png
cache-control
max-age=31536000
accept-ranges
bytes
content-length
487
backend.png
engineering.fb.com/wp-content/themes/code-fb-com/img/
2 KB
2 KB
Image
General
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/img/backend.png
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
19284533915784ca8dab4f71230450f0a71789ea2efc70c3e750cf2dca542bb2
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 253 443
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
etag
"668e844c-899"
x-cache
HIT
content-type
image/png
cache-control
max-age=31536000
accept-ranges
bytes
content-length
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hardware.png
engineering.fb.com/wp-content/themes/code-fb-com/img/
388 B
624 B
Image
General
Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/img/hardware.png
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
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Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 111 253 443
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
etag
"668e844c-184"
x-cache
HIT
content-type
image/png
cache-control
max-age=31536000
accept-ranges
bytes
content-length
388
sdk.js
connect.facebook.net/en_US/
3 KB
4 KB
Script
General
Full URL
https://connect.facebook.net/en_US/sdk.js
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/_static/??/wp-content/themes/code-fb-com/dist/js/child-theme.min.js,/wp-content/themes/code-fb-com/js/prism.js?m=1720616012j
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a03:2880:f083:9:face:b00c:0:3 Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),
Reverse DNS
Software
/
Resource Hash
3c8950f82c0501261271ec89d4bcde107ea5c010846e4a0a56e89b656164e88b
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; preload; includeSubDomains
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

strict-transport-security
max-age=31536000; preload; includeSubDomains
content-encoding
gzip
x-content-type-options
nosniff
date
Thu, 08 Aug 2024 20:51:08 GMT
content-md5
ZxCg358SL1Xxgu/mQ+3jWw==
document-policy
force-load-at-top
x-fb-server-load
26
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
content-length
1687
reporting-endpoints
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x-fb-connection-quality
EXCELLENT; q=0.9, rtt=9, rtx=0, c=12, mss=1297, tbw=2777, tp=-1, tpl=-1, uplat=1, ullat=-1
x-fb-debug
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cross-origin-embedder-policy-report-only
require-corp;report-to="coep_report"
x-fb-content-md5
b1c0680fa48efad43b3a45b9e29be6a4
cross-origin-opener-policy
same-origin-allow-popups;report-to="coop_report"
etag
"fa22a49c912189225518886a65bead51"
vary
Accept-Encoding
report-to
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content-type
application/x-javascript; charset=utf-8
access-control-allow-origin
*
access-control-expose-headers
X-FB-Content-MD5
cache-control
public,max-age=1200,stale-while-revalidate=3600
permissions-policy
accelerometer=(), attribution-reporting=(), autoplay=(), battery=(self), bluetooth=(), camera=(), ch-device-memory=(), ch-downlink=(), ch-dpr=(), ch-ect=(), ch-rtt=(), ch-save-data=(), ch-ua-arch=(), ch-ua-bitness=(), ch-viewport-height=(), ch-viewport-width=(), ch-width=(), clipboard-read=(), clipboard-write=(), compute-pressure=(), display-capture=(), encrypted-media=(), fullscreen=(self), gamepad=(), geolocation=(), gyroscope=(), hid=(), idle-detection=(), interest-cohort=(), keyboard-map=(), local-fonts=(), magnetometer=(), microphone=(), midi=(), otp-credentials=(), payment=(), picture-in-picture=(), private-state-token-issuance=(), publickey-credentials-get=(), screen-wake-lock=(), serial=(), shared-storage=(), shared-storage-select-url=(), private-state-token-redemption=(), usb=(), usb-unrestricted=(), unload=(self), window-management=(), xr-spatial-tracking=();report-to="permissions_policy"
x-frame-options
DENY
timing-allow-origin
*
expires
Thu, 08 Aug 2024 21:10:09 GMT
wp-emoji-release.min.js
engineering.fb.com/wp-includes/js/
18 KB
5 KB
Script
General
Full URL
https://engineering.fb.com/wp-includes/js/wp-emoji-release.min.js?ver=6.6.1
Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
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
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Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 23 Jul 2024 16:04:57 GMT
server
nginx
x-rq
hhn2 111 254 443
etag
W/"669fd4a9-4926"
vary
Accept-Encoding
x-cache
HIT
content-type
application/javascript
cache-control
max-age=31536000
accept-ranges
bytes
sdk.js
connect.facebook.net/en_US/
305 KB
89 KB
Script
General
Full URL
https://connect.facebook.net/en_US/sdk.js?hash=3989d74f852956aa0ad42e006d0d8b56
Requested by
Host: connect.facebook.net
URL: https://connect.facebook.net/en_US/sdk.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a03:2880:f083:9:face:b00c:0:3 Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),
Reverse DNS
Software
/
Resource Hash
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Security Headers
Name Value
Strict-Transport-Security max-age=31536000; preload; includeSubDomains
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

Referer
https://engineering.fb.com/
Origin
https://engineering.fb.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

strict-transport-security
max-age=31536000; preload; includeSubDomains
content-encoding
gzip
x-content-type-options
nosniff
date
Thu, 08 Aug 2024 20:51:08 GMT
content-md5
5nbPRHCwrlm/QF4KhvnRPg==
document-policy
force-load-at-top
x-fb-server-load
60
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
content-length
89183
reporting-endpoints
coop_report="https://www.facebook.com/browser_reporting/coop/?minimize=0", coep_report="https://www.facebook.com/browser_reporting/coep/?minimize=0", permissions_policy="https://www.facebook.com/ajax/browser_error_reports/"
x-fb-connection-quality
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x-fb-debug
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cross-origin-embedder-policy-report-only
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x-fb-content-md5
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cross-origin-opener-policy
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etag
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vary
Accept-Encoding
report-to
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content-type
application/x-javascript; charset=utf-8
access-control-allow-origin
*
access-control-expose-headers
X-FB-Content-MD5
cache-control
public,max-age=31536000,stale-while-revalidate=3600,immutable
permissions-policy
accelerometer=(), attribution-reporting=(), autoplay=(), battery=(self), bluetooth=(), camera=(), ch-device-memory=(), ch-downlink=(), ch-dpr=(), ch-ect=(), ch-rtt=(), ch-save-data=(), ch-ua-arch=(), ch-ua-bitness=(), ch-viewport-height=(), ch-viewport-width=(), ch-width=(), clipboard-read=(), clipboard-write=(), compute-pressure=(), display-capture=(), encrypted-media=(), fullscreen=(self), gamepad=(), geolocation=(), gyroscope=(), hid=(), idle-detection=(), interest-cohort=(), keyboard-map=(), local-fonts=(), magnetometer=(), microphone=(), midi=(), otp-credentials=(), payment=(), picture-in-picture=(), private-state-token-issuance=(), publickey-credentials-get=(), screen-wake-lock=(), serial=(), shared-storage=(), shared-storage-select-url=(), private-state-token-redemption=(), usb=(), usb-unrestricted=(), unload=(self), window-management=(), xr-spatial-tracking=();report-to="permissions_policy"
x-frame-options
DENY
timing-allow-origin
*
expires
Fri, 08 Aug 2025 19:30:53 GMT
favicon.ico
engineering.fb.com/wp-content/themes/code-fb-com/
5 KB
2 KB
Other
General
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

Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date
Thu, 08 Aug 2024 20:51:08 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Wed, 10 Jul 2024 12:53:32 GMT
server
nginx
x-rq
hhn2 111 254 443
etag
W/"668e844c-15b6"
vary
Accept-Encoding
x-cache
HIT
content-type
image/x-icon
cache-control
max-age=31536000
accept-ranges
bytes

Verdicts & Comments Add Verdict or Comment

50 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| _wpemojiSettings object| _domassistevents function| gdprSafeTrack function| jQuery function| Popper object| loadmore_params object| search_params 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| google_tag_manager object| google_tag_data object| dataLayer object| FB object| twemoji object| wp object| __buffer

0 Cookies

1 Console Messages

Source Level URL
Text
network error URL: https://facebookmicrosites.github.io/favicon.ico
Message:
Failed to load resource: the server responded with a status of 404 ()

Security Headers

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

Header Value
Strict-Transport-Security max-age=31557600

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.

code.facebook.com
code.fb.com
connect.facebook.net
engineering.fb.com
facebookmicrosites.github.io
www.googleoptimize.com
2606:50c0:8001::153
2a00:1450:4001:810::200e
2a03:2880:f083:9:face:b00c:0:3
2a03:2880:f084:10d:face:b00c:0:2
2a04:fa87:fffd::c000:421d
2a04:fa87:fffd::c000:42ec
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3d2c10cf69410c10177fc6e56937d05151b182841fa6aee36f651d587d91fbb8
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