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https://regex101.com

UP

HTTP Status

200

Ping

100 ms

Technologies

4

Domain Owner Information

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Registrar

NAMECHEAP INC

Created

August 15, 2012

13 years 76 days old

Expires

August 15, 2026

9 months 21 days left

Domain Status

Transfer Lock (Client)

Domain cannot be transferred to another registrar.

SSL/TLS Certificate

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Issued By

C=US, O=Let's Encrypt, CN=E7

Security Score
87 /100

Technologies Detected

Google

Email Provider

Evidence
  • • MX: smtp.google.com

Let's Encrypt

Certificate Authority

Evidence
  • • SSL certificate issuer

Namecheap

DNS Provider

Evidence
  • • Nameserver: dns1.registrar-servers.com
  • • Nameserver: dns2.registrar-servers.com

Nginx

Web Server

Evidence
  • • Server header

Metadata & SEO

Title
regex101: build, test, and debug regex
Description
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.
Keywords
regex,regex tester,regular expression,debugger,pcre,php,golang,java,javascript,python,.net,c#,rust
Language
en
Viewport
width=device-width, minimum-scale=1.0, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover

Social Media Cards

OpenGraph

Type
website
Description
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.
Title
regex101: build, test, and debug regex
Image
https://regex101.com/preview/
Url
https://regex101.com/
Site Name
regex101
Image:width
1200
Image:height
630

Dependencies

🎨 Stylesheets (1)

  • • https://regex101.com/static/23.b05109e856219d3ec077.css

📜 Scripts (3)

  • • https://analytics.regex101.com/js/script.outbound-links.pageview-props.tagged-events.js
  • • https://regex101.com/static/vendors-bundle.69c51a63cc1a2de34a7f.js
  • • https://regex101.com/static/bundle.dda2e374a308ef3229ef.js

Resource Hints

preconnect

https://fonts.googleapis.com

preconnect

https://fonts.gstatic.com

Crossorigin: crossorigin

preload

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

Type: style

preload

https://regex101.com/static/vendors-accountPage-quickref.2a1b81a9f2f3158fc010.chunk.js

Type: script

preload

https://regex101.com/static/67.7a08e53f4cbe0280b2fa.css

Type: style

preload

https://regex101.com/static/quickref.1042efe7e590cfaa27f0.chunk.js

Type: script

Inspected on November 02, 2025 at 19:11 UTC