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engineering.fb.com Open in urlscan Pro
2a04:fa87:fffd::c000:42ec  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://facebookmicrosites.github.io/
Effective URL: https://engineering.fb.com/
Submission: On February 12 via manual from US — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 5 IPs in 3 countries across 5 domains to perform 42 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 854948.
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

1    2606:50c0:8002::153 (United States)

ASN54113 (FASTLY, US)
facebookmicrosites.github.io
1    2606:50c0:8000::153 (United States)

ASN54113 (FASTLY, US)
facebookmicrosites.github.io
1    2a03:2880:f050:11:face:b00c:0:2 (Hamburg, Germany)

ASN32934 (FACEBOOK, US)
code.facebook.com
1    2a04:fa87:fffd::c000:421d (Ireland)

ASN2635 (AUTOMATTIC, US)
code.fb.com
37    2a04:fa87:fffd::c000:42ec (Ireland)

ASN2635 (AUTOMATTIC, US)
engineering.fb.com
1    2a00:1450:4001:806::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.googleoptimize.com
2    2a03:2880:f084:d:face:b00c:0:3 (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)
connect.facebook.net
Apex Domain
Subdomains		 Transfer
38 fb.com
code.fb.com
engineering.fb.com — Cisco Umbrella Rank: 854948
893 KB
2 facebook.net
connect.facebook.net — Cisco Umbrella Rank: 171
90 KB
2 github.io
facebookmicrosites.github.io — Cisco Umbrella Rank: 565871
1 KB
1 googleoptimize.com
www.googleoptimize.com — Cisco Umbrella Rank: 2408
51 KB
1 facebook.com
code.facebook.com
732 B
42 5
Domain Requested by
37 engineering.fb.com engineering.fb.com
2 connect.facebook.net engineering.fb.com
connect.facebook.net
2 facebookmicrosites.github.io 1 redirects
1 www.googleoptimize.com engineering.fb.com
1 code.fb.com 1 redirects
1 code.facebook.com 1 redirects
42 6
Subject Issuer Validity Valid
*.github.io
DigiCert TLS RSA SHA256 2020 CA1		 2023-02-21 -
2024-03-20		 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
GTS CA 1C3		 2024-01-09 -
2024-04-02		 3 months crt.sh
*.facebook.com
DigiCert SHA2 High Assurance Server CA		 2023-11-22 -
2024-02-20		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://engineering.fb.com/
Frame ID: 6EC7DE20571C25605532D9C693CED05C
Requests: 42 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Engineering at Meta - Engineering at Meta Blog

Page URL History Show full URLs

  1. http://facebookmicrosites.github.io/ HTTP 301
    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

42
Requests

98 %
HTTPS

100 %
IPv6

5
Domains

6
Subdomains

5
IPs

3
Countries

1034 kB
Transfer

2224 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 301
    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 301
  • https://facebookmicrosites.github.io/

42 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
530 B 		Document
General
Check archive.org
Download Go to
Full URL
https://facebookmicrosites.github.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:50c0:8000::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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36
accept-language
de-DE,de;q=0.9

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
Mon, 12 Feb 2024 19:21:30 GMT
etag
"5a7c83e9-71"
expires
Mon, 12 Feb 2024 19:31:29 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
MISS
x-cache-hits
0
x-fastly-request-id
abd87d24ea1d307f8e859fb76d250125ad3cbb67
x-github-request-id
2BB0:7E6D:23ED92:2B8486:65CA6FB9
x-proxy-cache
MISS
x-served-by
cache-dxb1470029-DXB
x-timer
S1707765690.789981,VS0,VE226

Redirect headers

Accept-Ranges
bytes
Age
0
Connection
keep-alive
Content-Length
162
Content-Type
text/html
Date
Mon, 12 Feb 2024 19:21:29 GMT
Location
https://facebookmicrosites.github.io/
Server
GitHub.com
Vary
Accept-Encoding
Via
1.1 varnish
X-Cache
MISS
X-Cache-Hits
0
X-Fastly-Request-ID
009e4d20de1e5d16f019b7609727b977851274b0
X-GitHub-Request-Id
79CC:10BF:2546D5:2CEDE3:65CA6FB9
X-Served-By
cache-dxb1470027-DXB
X-Timer
S1707765689.211674,VS0,VE201
permissions-policy
interest-cohort=()
Primary Request /
engineering.fb.com/
Redirect Chain
  • https://code.facebook.com/
  • https://code.fb.com/
  • https://engineering.fb.com/
71 KB
14 KB 		Document
General
Check archive.org
Download Go to
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
7cf26e67ad85bacccf9b47d185159bc2e00b37b921b44cca6a3640540142d5a9
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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

accept-ranges
bytes
cache-control
max-age=300, must-revalidate
content-encoding
br
content-type
text/html; charset=UTF-8
date
Mon, 12 Feb 2024 19:21:30 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
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 123 242 443

Redirect headers

content-type
text/html; charset=utf-8
date
Mon, 12 Feb 2024 19:21:30 GMT
location
https://engineering.fb.com/
server
nginx
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-cache
HIT
x-rq
hhn1 123 242 443
optimize.js
www.googleoptimize.com/ 		133 KB
51 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/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:806::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
d7d583cc9243ac909327b28132226f333864df6d70f383ca6cd7e67a06b5f94c
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 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
52129
x-xss-protection
0
last-modified
Mon, 12 Feb 2024 18:00:00 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
Mon, 12 Feb 2024 19:21:30 GMT
style.min.css
engineering.fb.com/wp-includes/css/dist/block-library/ 		108 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=1706643139g
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
0085adfd2d08a45f62a06d8f3f969ddc4a94ebe8d226511db90aa038f11ed180
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

accept-language
de-DE,de;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/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 30 Jan 2024 19:32:19 GMT
server
nginx
x-rq
hhn2 123 242 443
etag
W/"65b94ec3-1ae43"
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
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/_static/??-eJzTLy/QzcxLzilNSS3WzyrWz01NyUxMzUnNTc0rQeEU5CRWphbp5qSmJyZX6uVm5uklFxfr6OPTDpRD5sM02efaGpobmJmZGBuaGAAARKsu2w==
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

accept-language
de-DE,de;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/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 30 Jan 2024 19:32:20 GMT
server
nginx
x-rq
hhn2 123 242 443
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-next/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-next/dist/css/related-posts-block-styles.min.css?m=1707245662g
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

accept-language
de-DE,de;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/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 123 243 443
last-modified
Tue, 06 Feb 2024 18:54:22 GMT
server
nginx
etag
"65c2805e-de"
x-cache
HIT
content-type
text/css
cache-control
max-age=31536000
accept-ranges
bytes
content-length
222
/
engineering.fb.com/_static/ 		561 KB
76 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/_static/??-eJxlze0OgjAMheEbsiv4Af4xXot2FaZ0LLaE22dDTEz8++S8OTgnoDEaR8M0TF2Iipk6n97FtbgPalhkA0eqO/wJrWdhRRo9w+OeWT5N3iH1YfCwLpyE+NfKBN/fJ1u60Qvqg6vWdoPSXOVSt1W7P56ac7MAJCdBWQ==
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
bd793ebc2d967566d218d9326f4a2c154b05ff0b79c91b05345456f85556765e
Security Headers
Name Value
Strict-Transport-Security max-age=31536000;includeSubdomains;preload

Request headers

accept-language
de-DE,de;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/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 06 Feb 2024 18:54:46 GMT
server
nginx
x-rq
hhn2 123 243 443
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/
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
Referer
https://engineering.fb.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 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
hhn2 123 243 443
etag
W/"64e4adc5-1b00"
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
Check archive.org
Download Go to
Full URL
https://engineering.fb.com/_static/??-eJzTLy/QzcxLzilNSS3WzwKiwtLUokoopZebmaeXVayjj0+Rbm5melFiSSqy4uT8vJLUvBL9kozUXKCW0ryU1KLikqLEApDugvyCgtQiqHL7XFtDcwMzMxNjQxODLAD33zP8
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

accept-language
de-DE,de;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/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 30 Jan 2024 19:32:20 GMT
server
nginx
x-rq
hhn2 123 242 443
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
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/
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
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 123 242 443
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=31536000
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/
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
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 123 242 443
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
cache-control
max-age=31536000
accept-ranges
bytes
content-length
35236
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last-modified
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50 KB 		Image
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https://engineering.fb.com/wp-content/uploads/2023/11/Eng-Blog-Self-Serve-Hero-Images-DATACENTERS-501-TealeLight-1.jpg?w=580&h=326&crop=1
Requested by
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URL: https://engineering.fb.com/
Protocol
H2
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TLS 1.3, , AES_128_GCM
Server
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nginx /
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Request headers

accept-language
de-DE,de;q=0.9
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User-Agent
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 109 196 443
last-modified
Tue, 06 Feb 2024 10:00:49 GMT
server
nginx
etag
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content-type
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26 KB 		Image
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Requested by
Host: engineering.fb.com
URL: https://engineering.fb.com/
Protocol
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accept-language
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User-Agent
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 109 83 443
last-modified
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server
nginx
etag
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81 KB 		Image
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https://engineering.fb.com/wp-content/themes/code-fb-com/img/datahallway_thumb.jpg
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Host: engineering.fb.com
URL: https://engineering.fb.com/
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nginx /
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accept-language
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User-Agent
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 123 242 443
last-modified
Tue, 22 Aug 2023 12:44:53 GMT
server
nginx
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https://engineering.fb.com/wp-content/themes/code-fb-com/img/fbopensource.png
Requested by
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accept-language
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
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last-modified
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server
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14 KB 		Image
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https://engineering.fb.com/wp-content/themes/code-fb-com/img/meta_logo.png
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URL: https://engineering.fb.com/
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accept-language
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
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hhn2 123 243 443
last-modified
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server
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etag
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6 KB 		Image
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Full URL
https://engineering.fb.com/wp-content/themes/code-fb-com/img/facebook-developers.png
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Host: engineering.fb.com
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accept-language
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User-Agent
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
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last-modified
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server
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5 KB 		Image
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https://engineering.fb.com/wp-content/themes/code-fb-com/img/rss.png
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Host: engineering.fb.com
URL: https://engineering.fb.com/
Protocol
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accept-language
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User-Agent
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
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x-rq
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last-modified
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2 KB 		Image
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https://engineering.fb.com/wp-content/themes/code-fb-com/img/android.png
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Host: engineering.fb.com
URL: https://engineering.fb.com/
Protocol
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accept-language
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
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https://engineering.fb.com/wp-content/themes/code-fb-com/img/ios.png
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Host: engineering.fb.com
URL: https://engineering.fb.com/
Protocol
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accept-language
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
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last-modified
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server
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General
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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
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accept-language
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https://engineering.fb.com/
User-Agent
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
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hhn2 123 242 443
last-modified
Tue, 22 Aug 2023 12:44:53 GMT
server
nginx
etag
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2 KB 		Image
General
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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
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https://engineering.fb.com/
User-Agent
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Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 123 242 443
last-modified
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server
nginx
etag
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accept-ranges
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623 B 		Image
General
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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
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2a04:fa87:fffd::c000:42ec , Ireland, ASN2635 (AUTOMATTIC, US),
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accept-language
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User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
strict-transport-security
max-age=31536000;includeSubdomains;preload
x-rq
hhn2 123 242 443
last-modified
Tue, 22 Aug 2023 12:44:53 GMT
server
nginx
etag
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cache-control
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accept-ranges
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sdk.js
connect.facebook.net/en_US/ 		3 KB
3 KB 		Script
General
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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=1692708293j
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Request headers

accept-language
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https://engineering.fb.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

permissions-policy-report-only
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strict-transport-security
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date
Mon, 12 Feb 2024 19:21:30 GMT
content-md5
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content-type
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access-control-allow-origin
*
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X-FB-Content-MD5
cache-control
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permissions-policy
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*
expires
Mon, 12 Feb 2024 19:33:33 GMT
wp-emoji-release.min.js
engineering.fb.com/wp-includes/js/ 		18 KB
5 KB 		Script
General
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https://engineering.fb.com/wp-includes/js/wp-emoji-release.min.js?ver=6.4.3
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),
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Software
nginx /
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Name Value
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accept-language
de-DE,de;q=0.9
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https://engineering.fb.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 19:21:30 GMT
content-encoding
br
strict-transport-security
max-age=31536000;includeSubdomains;preload
last-modified
Tue, 30 Jan 2024 19:32:20 GMT
server
nginx
x-rq
hhn2 123 242 443
etag
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vary
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x-cache
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content-type
application/javascript
cache-control
max-age=31536000
accept-ranges
bytes
sdk.js
connect.facebook.net/en_US/ 		303 KB
87 KB 		Script
General
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Download Go to
Full URL
https://connect.facebook.net/en_US/sdk.js?hash=bf3102756ec223aad327b9b9283f0dff
Requested by
Host: connect.facebook.net
URL: https://connect.facebook.net/en_US/sdk.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a03:2880:f084:d:face:b00c:0:3 Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),
Reverse DNS
Software
/
Resource Hash
2a0b0dd3b676dba0d69d58ffab9ae549cafb30ffa164e8f57ee5d09a6e4066d9
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
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

permissions-policy-report-only
autoplay=(), clipboard-read=(), clipboard-write=(), display-capture=(), encrypted-media=(), fullscreen=(), picture-in-picture=(), xr-spatial-tracking=();report-to="permissions_policy"
strict-transport-security
max-age=31536000; preload; includeSubDomains
content-encoding
gzip
x-content-type-options
nosniff
date
Mon, 12 Feb 2024 19:21:30 GMT
content-md5
nZuAdETGKotsAb/k4KbEPw==
document-policy
force-load-at-top
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
content-length
88666
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-debug
zsCxZArXxTKoZGv3FRp/OYef7S0EQbU6MrUYmKXWCjbHCLq6VrPxPjgPocYBL9YApbeTCYaRtPa0UWRUQ86IuA==
cross-origin-embedder-policy-report-only
require-corp;report-to="coep_report"
x-fb-content-md5
a8d3e0ca00fda8513547397453de518f
cross-origin-opener-policy
same-origin-allow-popups;report-to="coop_report"
etag
"3a99098ffed4b8cbe7e43b5ae9bece4d"
vary
Accept-Encoding
report-to
{"max_age":2592000,"endpoints":[{"url":"https:\/\/www.facebook.com\/browser_reporting\/coop\/?minimize=0"}],"group":"coop_report","include_subdomains":true}, {"max_age":86400,"endpoints":[{"url":"https:\/\/www.facebook.com\/browser_reporting\/coep\/?minimize=0"}],"group":"coep_report"}, {"max_age":21600,"endpoints":[{"url":"https:\/\/www.facebook.com\/ajax\/browser_error_reports\/"}],"group":"permissions_policy"}
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=(), ambient-light-sensor=(), bluetooth=(), camera=(), gamepad=(), geolocation=(), gyroscope=(), hid=(), idle-detection=(), keyboard-map=(), local-fonts=(), magnetometer=(), microphone=(), midi=(), otp-credentials=(), payment=(), publickey-credentials-get=(), screen-wake-lock=(), serial=(), usb=(), window-management=();report-to="permissions_policy"
x-frame-options
DENY
timing-allow-origin
*
priority
u=3,i
expires
Tue, 11 Feb 2025 13:55:12 GMT

Verdicts & Comments Add Verdict or Comment

52 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 undefined| $ 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| google_optimize object| FB object| twemoji object| wp object| __buffer

0 Cookies

1 Console Messages

Source Level URL
Text
security warning
Message:
Error with Permissions-Policy header: Origin trial controlled feature not enabled: 'interest-cohort'.

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
2606:50c0:8000::153
2606:50c0:8002::153
2a00:1450:4001:806::200e
2a03:2880:f050:11:face:b00c:0:2
2a03:2880:f084:d:face:b00c:0:3
2a04:fa87:fffd::c000:421d
2a04:fa87:fffd::c000:42ec
0085adfd2d08a45f62a06d8f3f969ddc4a94ebe8d226511db90aa038f11ed180
03ca1c9f091b9d6cdff3f197ff3cc6c3e481438efdb27e1a82048696b82760a2
08577020800123a94ed17e369994852a0a1c05ea875abe776773fac88c50fa11
19284533915784ca8dab4f71230450f0a71789ea2efc70c3e750cf2dca542bb2
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3d2c10cf69410c10177fc6e56937d05151b182841fa6aee36f651d587d91fbb8
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9790593b4acafa770479511a888914881594976c5dcad980c82e781c5625ff44
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9e1c82f61fd3d0de9391b4f6503592d61c3f885d888690b071d197d785eb9ff9
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bd793ebc2d967566d218d9326f4a2c154b05ff0b79c91b05345456f85556765e
bf7464b77326a2e577433ce4ca8d0d52c257c17393848b758c4a76cccda18ec3
c3311002110f5e9dc2ac12e372fe57e6fe36d15de375fa15c78361d39a3d6ff9
c8dfcd153bc6096ee9bb68e2a5b16f5dc7a76d7a06ba627485d3eeb593705430
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d7d583cc9243ac909327b28132226f333864df6d70f383ca6cd7e67a06b5f94c
dc678ea7a79a009395dfc06c00b60970012d08aea2dd7c0c3f50ac07de7c699e
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ffa8333d3572afdfbdc47b93abb4ddbceb02de802206ee984b76e266d4eaee02