Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 216.92.20.37 |
| Server Software | Apache |
| Compression | gzip |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 216.92.20.37
Server Software Apache
Compression gzip
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://regular-expressions.info:443 | 301 | HTTP/1.1 301 Moved Permanently |
| 2 | https://www.regular-expressions.info/ | 200 | HTTP/1.1 200 OK |
#1 URL https://regular-expressions.info:443
HTTP Status Code 301
Status HTTP/1.1 301 Moved Permanently
#2 URL https://www.regular-expressions.info/
HTTP Status Code 200
Status HTTP/1.1 200 OK
Performance
| DNS Lookup | 201.4 ms |
| TCP Connect | 279.9 ms |
| TLS Handshake | 83 ms |
| Time To First Byte (TTFB) | 443.9 ms |
| Content Download | 0.1 ms |
| Total Response Time | 444 ms |
DNS Lookup 201.4 ms
TCP Connect 279.9 ms
TLS Handshake 83 ms
Time To First Byte (TTFB) 443.9 ms
Content Download 0.1 ms
Total Response Time 444 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000 |
| CSP | ✔ Configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ✔ nosniff |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000
CSP ✔ Configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ✔ nosniff
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Regular-Expressions.info - Regex Tutorial, Examples and Reference - Regexp Patterns |
| Meta Description | At Regular-Expressions.info you will find a wide range of in-depth information about a powerful search pattern language called regular expressions. |
Title Regular-Expressions.info - Regex Tutorial, Examples and Reference - Regexp Patterns
Meta Description At Regular-Expressions.info you will find a wide range of in-depth information about a powerful search pattern language called regular expressions.
Detected Technologies
| Technology | Apache Node.js |
Technology Apache Node.js
HTTP Headers
| Date
| Thu, 23 Jul 2026 20:43:22 GMT |
| Server
| Apache |
| Vary
| Accept-Encoding |
| Content-Encoding
| gzip |
| Strict-Transport-Security
| max-age=31536000 |
| X-Content-Type-Options
| nosniff |
| Content-Security-Policy
| frame-ancestors 'self'; |
| X-UA-Compatible
| IE=Edge |
| Content-Length
| 3989 |
| Content-Type
| text/html; charset=UTF-8 |
Meta Tags
| Viewport | width=device-width, initial-scale=1 |
| Author | Jan Goyvaerts |
| Description | At Regular-Expressions.info you will find a wide range of in-depth information about a powerful search pattern language called regular expressions. |
Date Thu, 23 Jul 2026 20:43:22 GMT
Server Apache
Vary Accept-Encoding
Content-Encoding gzip
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
Content-Security-Policy frame-ancestors 'self';
X-UA-Compatible IE=Edge
Content-Length 3989
Content-Type text/html; charset=UTF-8
