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regex101.com Open in urlscan Pro
2a01:4f8:1c1c:13a4::1  Public Scan

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URL: https://regex101.com/
Submission: On October 30 via manual from FR — Scanned from FR
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 6 IPs in 3 countries across 4 domains to perform 15 HTTP transactions. The main IP is 2a01:4f8:1c1c:13a4::1, located in Gunzenhausen, Germany and belongs to HETZNER-AS, DE. The main domain is regex101.com. The Cisco Umbrella rank of the primary domain is 160300.
TLS certificate: Issued by E6 on September 22nd 2024. Valid for: 3 months.
This is the only time regex101.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
8 2a01:4f8:1c1c... 24940 (HETZNER-AS)
1 2a00:1450:400... 15169 (GOOGLE)
2 195.201.221.111 24940 (HETZNER-AS)
2 142.250.184.195 15169 (GOOGLE)
2 152.42.150.143 14061 (DIGITALOC...)
15 6
8    2a01:4f8:1c1c:13a4::1 (Gunzenhausen, Germany)

ASN24940 (HETZNER-AS, DE)
regex101.com
1    2a00:1450:4001:81d::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
fonts.googleapis.com
2    195.201.221.111 (Gunzenhausen, Germany)

ASN24940 (HETZNER-AS, DE)
PTR: static.111.221.201.195.clients.your-server.de
analytics.regex101.com
2    142.250.184.195 (United States)

ASN15169 (GOOGLE, US)
PTR: fra24s11-in-f3.1e100.net
fonts.gstatic.com
2    152.42.150.143 (Amsterdam, Netherlands)

ASN14061 (DIGITALOCEAN-ASN, US)
srv.buysellads.com
Apex Domain
Subdomains		 Transfer
10 regex101.com
regex101.com — Cisco Umbrella Rank: 160300
analytics.regex101.com — Cisco Umbrella Rank: 266324
315 KB
2 buysellads.com
srv.buysellads.com — Cisco Umbrella Rank: 26047
37 KB
2 gstatic.com
fonts.gstatic.com
68 KB
1 googleapis.com
fonts.googleapis.com — Cisco Umbrella Rank: 30
3 KB
15 4
Domain Requested by
8 regex101.com regex101.com
2 srv.buysellads.com regex101.com
2 fonts.gstatic.com fonts.googleapis.com
2 analytics.regex101.com regex101.com
analytics.regex101.com
1 fonts.googleapis.com regex101.com
15 5

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

Domain
digidib.dev
srv.buysellads.com
discover.buysellads.com
Subject Issuer Validity Valid
regex101.com
E6		 2024-09-22 -
2024-12-21		 3 months crt.sh
upload.video.google.com
WR2		 2024-10-07 -
2024-12-30		 3 months crt.sh
analytics.regex101.com
R10		 2024-09-16 -
2024-12-15		 3 months crt.sh
*.gstatic.com
WR2		 2024-10-07 -
2024-12-30		 3 months crt.sh
*.buysellads.com
E5		 2024-09-19 -
2024-12-18		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://regex101.com/
Frame ID: 7A0830827C9310AAD270818C9DFAC154
Requests: 16 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

regex101: build, test, and debug regex

Detected technologies

Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]+fonts\.(?:googleapis|google)\.com

Page Statistics

15
Requests

100 %
HTTPS

40 %
IPv6

4
Domains

5
Subdomains

6
IPs

3
Countries

423 kB
Transfer

1391 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

15 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
regex101.com/ 		57 KB
12 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://regex101.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a01:4f8:1c1c:13a4::1 Gunzenhausen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
Software
nginx /
Resource Hash
6d408db1c003a4afc8558ada3b527605d4a35bf0113104c8ea1378fc3c2cb8bb
Security Headers
Name Value
Content-Security-Policy default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Response headers

content-encoding
br
content-security-policy
default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
content-type
text/html; charset=utf-8
cross-origin-embedder-policy
credentialless
cross-origin-opener-policy
same-origin
date
Wed, 30 Oct 2024 16:25:24 GMT
etag
W/"e579-krIIVlf/bVJsLT9CoB5HWldTq1w"
referrer-policy
no-referrer-when-downgrade
server
nginx
service-worker-allowed
/
strict-transport-security
max-age=31536000; includeSubDomains; preload
vary
Accept-Encoding
x-content-type-options
nosniff
x-frame-options
SAMEORIGIN
x-xss-protection
1; mode=block
css2
fonts.googleapis.com/ 		37 KB
3 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,300;0,400;0,600;0,700;1,400&family=Source+Code+Pro:wght@400;500;700&display=swap
Requested by
Host: regex101.com
URL: https://regex101.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:81d::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
d7bc24f3d9b273c40760b76407f166905c17001db1ad52d95be20bd8eb368cdb
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://regex101.com/

Response headers

content-encoding
gzip
x-content-type-options
nosniff
expires
Wed, 30 Oct 2024 16:25:24 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Wed, 30 Oct 2024 16:25:24 GMT
content-type
text/css; charset=utf-8
vary
Sec-Fetch-Dest, Sec-Fetch-Mode, Sec-Fetch-Site
last-modified
Wed, 30 Oct 2024 16:11:25 GMT
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000
link
<https://fonts.gstatic.com>; rel=preconnect; crossorigin
cache-control
private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin
*
cross-origin-opener-policy
same-origin-allow-popups
cross-origin-resource-policy
cross-origin
access-control-allow-origin
*
x-xss-protection
0
server
ESF
plausible.js
analytics.regex101.com/js/ 		1 KB
2 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://analytics.regex101.com/js/plausible.js
Requested by
Host: regex101.com
URL: https://regex101.com/
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
195.201.221.111 Gunzenhausen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
static.111.221.201.195.clients.your-server.de
Software
nginx/1.18.0 (Ubuntu) /
Resource Hash
021f0fd27042b279a49e982215c6dc3c3ab84e95b35553a119dfdbd50af6be94
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://regex101.com/

Response headers

cache-control
public, max-age=86400, must-revalidate
cross-origin-resource-policy
cross-origin
Connection
keep-alive
x-content-type-options
nosniff
access-control-allow-origin
*
Content-Length
1346
Date
Wed, 30 Oct 2024 16:25:24 GMT
Content-Type
application/javascript
Server
nginx/1.18.0 (Ubuntu)
vendors-accountPage-quickref.5d4bdd75b0bc52041d5e.chunk.js
regex101.com/static/ 		984 B
968 B 		Script
General
Check archive.org
Download Go to
Full URL
https://regex101.com/static/vendors-accountPage-quickref.5d4bdd75b0bc52041d5e.chunk.js
Requested by
Host: regex101.com
URL: https://regex101.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a01:4f8:1c1c:13a4::1 Gunzenhausen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
Software
nginx /
Resource Hash
619a19269a898431ad57d0717d0d2bea6ca2d9f5ef186202b2e55798a3c4807c
Security Headers
Name Value
Content-Security-Policy default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://regex101.com/

Response headers

content-encoding
br
service-worker-allowed
/
etag
"670ba7b7-1bf"
x-content-type-options
nosniff
expires
Thu, 30 Oct 2025 16:25:24 GMT
date
Wed, 30 Oct 2024 16:25:24 GMT
content-type
application/javascript; charset=utf-8
last-modified
Sun, 13 Oct 2024 10:57:59 GMT
vary
Accept-Encoding
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000; includeSubDomains; preload
content-security-policy
default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
cache-control
max-age=31536000
cross-origin-opener-policy
same-origin
referrer-policy
no-referrer-when-downgrade
cross-origin-embedder-policy
credentialless
content-length
447
x-xss-protection
1; mode=block
server
nginx
67.7a08e53f4cbe0280b2fa.css
regex101.com/static/ 		2 KB
1 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://regex101.com/static/67.7a08e53f4cbe0280b2fa.css
Requested by
Host: regex101.com
URL: https://regex101.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a01:4f8:1c1c:13a4::1 Gunzenhausen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
Software
nginx /
Resource Hash
844ca5f6d87f91e5a76a7344c461b12fcd90abf409d1f2b284312c2fb475a4b4
Security Headers
Name Value
Content-Security-Policy default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://regex101.com/

Response headers

content-encoding
br
service-worker-allowed
/
etag
"670ba7b7-32e"
x-content-type-options
nosniff
expires
Thu, 30 Oct 2025 16:25:24 GMT
date
Wed, 30 Oct 2024 16:25:24 GMT
content-type
text/css
last-modified
Sun, 13 Oct 2024 10:57:59 GMT
vary
Accept-Encoding
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000; includeSubDomains; preload
content-security-policy
default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
cache-control
max-age=31536000
cross-origin-opener-policy
same-origin
referrer-policy
no-referrer-when-downgrade
cross-origin-embedder-policy
credentialless
content-length
814
x-xss-protection
1; mode=block
server
nginx
quickref.8ea2e6253065d00e7b2a.chunk.js
regex101.com/static/ 		120 KB
18 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://regex101.com/static/quickref.8ea2e6253065d00e7b2a.chunk.js
Requested by
Host: regex101.com
URL: https://regex101.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a01:4f8:1c1c:13a4::1 Gunzenhausen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
Software
nginx /
Resource Hash
a11a0811e9c2f8393244fd1080157f12d7c27c2d9508e2da3a727082f0ba106b
Security Headers
Name Value
Content-Security-Policy default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://regex101.com/

Response headers

content-encoding
br
service-worker-allowed
/
etag
"670ba7b7-45e5"
x-content-type-options
nosniff
expires
Thu, 30 Oct 2025 16:25:24 GMT
date
Wed, 30 Oct 2024 16:25:24 GMT
content-type
application/javascript; charset=utf-8
last-modified
Sun, 13 Oct 2024 10:57:59 GMT
vary
Accept-Encoding
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000; includeSubDomains; preload
content-security-policy
default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
cache-control
max-age=31536000
cross-origin-opener-policy
same-origin
referrer-policy
no-referrer-when-downgrade
cross-origin-embedder-policy
credentialless
content-length
17893
x-xss-protection
1; mode=block
server
nginx
vendors-bundle.a97fc849734c734173ad.js
regex101.com/static/ 		621 KB
171 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://regex101.com/static/vendors-bundle.a97fc849734c734173ad.js
Requested by
Host: regex101.com
URL: https://regex101.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a01:4f8:1c1c:13a4::1 Gunzenhausen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
Software
nginx /
Resource Hash
493bec2f11d67106dffb5a1687b6cc65ef72a0e37dd81480093449e3e06de542
Security Headers
Name Value
Content-Security-Policy default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://regex101.com/

Response headers

content-encoding
br
service-worker-allowed
/
etag
"670ba7b7-2aa7f"
x-content-type-options
nosniff
expires
Thu, 30 Oct 2025 16:25:24 GMT
date
Wed, 30 Oct 2024 16:25:24 GMT
content-type
application/javascript; charset=utf-8
last-modified
Sun, 13 Oct 2024 10:57:59 GMT
vary
Accept-Encoding
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000; includeSubDomains; preload
content-security-policy
default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
cache-control
max-age=31536000
cross-origin-opener-policy
same-origin
referrer-policy
no-referrer-when-downgrade
cross-origin-embedder-policy
credentialless
content-length
174719
x-xss-protection
1; mode=block
server
nginx
23.b2a0855ed5fe212190ae.css
regex101.com/static/ 		65 KB
15 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://regex101.com/static/23.b2a0855ed5fe212190ae.css
Requested by
Host: regex101.com
URL: https://regex101.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a01:4f8:1c1c:13a4::1 Gunzenhausen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
Software
nginx /
Resource Hash
20ab72d9cfd88bf13d511931b3dcbfd2dd8d300c5f73fa58e7174ebdec6d8ebc
Security Headers
Name Value
Content-Security-Policy default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://regex101.com/

Response headers

content-encoding
br
service-worker-allowed
/
etag
"670ba7b7-38f0"
x-content-type-options
nosniff
expires
Thu, 30 Oct 2025 16:25:24 GMT
date
Wed, 30 Oct 2024 16:25:24 GMT
content-type
text/css
last-modified
Sun, 13 Oct 2024 10:57:59 GMT
vary
Accept-Encoding
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000; includeSubDomains; preload
content-security-policy
default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
cache-control
max-age=31536000
cross-origin-opener-policy
same-origin
referrer-policy
no-referrer-when-downgrade
cross-origin-embedder-policy
credentialless
content-length
14576
x-xss-protection
1; mode=block
server
nginx
bundle.02a6e4c9dd24f6aceb5a.js
regex101.com/static/ 		363 KB
93 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://regex101.com/static/bundle.02a6e4c9dd24f6aceb5a.js
Requested by
Host: regex101.com
URL: https://regex101.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a01:4f8:1c1c:13a4::1 Gunzenhausen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
Software
nginx /
Resource Hash
aed598a152beb6a401c10fa1667897962042ac8b36a1f907e6d011f4d50417e4
Security Headers
Name Value
Content-Security-Policy default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://regex101.com/

Response headers

content-encoding
br
service-worker-allowed
/
etag
"670ba7b7-17119"
x-content-type-options
nosniff
expires
Thu, 30 Oct 2025 16:25:24 GMT
date
Wed, 30 Oct 2024 16:25:24 GMT
content-type
application/javascript; charset=utf-8
last-modified
Sun, 13 Oct 2024 10:57:59 GMT
vary
Accept-Encoding
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000; includeSubDomains; preload
content-security-policy
default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
cache-control
max-age=31536000
cross-origin-opener-policy
same-origin
referrer-policy
no-referrer-when-downgrade
cross-origin-embedder-policy
credentialless
content-length
94489
x-xss-protection
1; mode=block
server
nginx
truncated
/ 		769 B
0 		Image
General
Check archive.org
Download Go to Show image
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
56b41106dbafac391838627a26366e878c586783a5cf69ec613b939712312eb2

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer

Response headers

Content-Type
image/png
event
analytics.regex101.com/api/ 		2 B
372 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://analytics.regex101.com/api/event
Requested by
Host: analytics.regex101.com
URL: https://analytics.regex101.com/js/plausible.js
Protocol
HTTP/1.1
Security
TLS 1.3, , AES_128_GCM
Server
195.201.221.111 Gunzenhausen, Germany, ASN24940 (HETZNER-AS, DE),
Reverse DNS
static.111.221.201.195.clients.your-server.de
Software
nginx/1.18.0 (Ubuntu) /
Resource Hash
2689367b205c16ce32ed4200942b8b8b1e262dfc70d9bc9fbc77c49699a4f1df

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Content-Type
text/plain
Referer
https://regex101.com/

Response headers

x-request-id
GANHtP7HbVWACV4UNFjS
access-control-expose-headers
cache-control
max-age=0, private, must-revalidate
Connection
keep-alive
access-control-allow-credentials
true
access-control-allow-origin
*
Content-Length
2
Date
Wed, 30 Oct 2024 16:25:24 GMT
Content-Type
text/plain; charset=utf-8
Server
nginx/1.18.0 (Ubuntu)
memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-muw.woff2
fonts.gstatic.com/s/opensans/v40/ 		47 KB
47 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://fonts.gstatic.com/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-muw.woff2
Requested by
Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,300;0,400;0,600;0,700;1,400&family=Source+Code+Pro:wght@400;500;700&display=swap
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
142.250.184.195 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
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Software
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Resource Hash
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Security Headers
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Request headers

User-Agent
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Origin
https://regex101.com
Referer
https://fonts.googleapis.com/

Response headers

age
3423
report-to
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x-content-type-options
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server
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General
Check archive.org
Download Go to
Full URL
https://fonts.gstatic.com/s/sourcecodepro/v23/HI_SiYsKILxRpg3hIP6sJ7fM7PqlPevW.woff2
Requested by
Host: fonts.googleapis.com
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QUIC, , AES_128_GCM
Server
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Reverse DNS
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Software
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Resource Hash
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Security Headers
Name Value
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Request headers

User-Agent
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Origin
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Referer
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age
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report-to
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x-content-type-options
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*
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x-xss-protection
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server
sffe
favicon.ico
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2 KB 		Other
General
Check archive.org
Download Go to
Full URL
https://regex101.com/static/assets/favicon.ico
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
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Security Headers
Name Value
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X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
https://regex101.com/

Response headers

content-encoding
br
service-worker-allowed
/
etag
"670ba7b7-52c"
x-content-type-options
nosniff
expires
Thu, 30 Oct 2025 16:25:25 GMT
date
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content-type
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vary
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strict-transport-security
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cache-control
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cross-origin-opener-policy
same-origin
referrer-policy
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cross-origin-embedder-policy
credentialless
content-length
1324
x-xss-protection
1; mode=block
server
nginx
CESIEKJM.json
srv.buysellads.com/ads/ 		1 KB
793 B 		Script
General
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Full URL
https://srv.buysellads.com/ads/CESIEKJM.json?callback=jsonp_1730305525554_38301
Requested by
Host: regex101.com
URL: https://regex101.com/static/vendors-bundle.a97fc849734c734173ad.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
152.42.150.143 Amsterdam, Netherlands, ASN14061 (DIGITALOCEAN-ASN, US),
Reverse DNS
Software
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Resource Hash
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Request headers

User-Agent
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Referer
https://regex101.com/

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content-encoding
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access-control-allow-origin
*
content-length
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date
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content-type
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vary
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server
srv-ams3-0
access-control-allow-headers
*
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General
Check archive.org
Download Go to Show image
Full URL
https://srv.buysellads.com/static/30242/0cb80bb72aaa688ad3b9fa0e955e4313260d52e3
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
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Reverse DNS
Software
srv-ams3-0 /
Resource Hash
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Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Referer
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Response headers

cache-control
public, max-age=604800, immutable
content-encoding
gzip
etag
0cb80bb72aaa688ad3b9fa0e955e4313260d52e3
date
Wed, 30 Oct 2024 16:25:25 GMT
content-type
image/jpeg
vary
Accept-Encoding
server
srv-ams3-0

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8 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.

function| e function| plausible object| _global object| _sentryDebugIds string| _sentryDebugIdIdentifier object| SENTRY_RELEASE object| webpackChunkregex101 string| __reactRouterVersion

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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
Content-Security-Policy default-src 'self' 'unsafe-eval' http: https: data: blob: 'unsafe-inline'
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block