Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 87.79.15.140 |
| Server Software | Apache |
| Compression | gzip |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
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 87.79.15.140
Server Software Apache
Compression gzip
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
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://stadt-koeln.de:443 | 301 | HTTP/2 301 |
| 2 | http://www.stadt-koeln.de/ | 301 | HTTP/1.1 301 Moved Permanently |
| 3 | https://www.stadt-koeln.de/ | 200 | HTTP/2 200 |
#1 URL https://stadt-koeln.de:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL http://www.stadt-koeln.de/
HTTP Status Code 301
Status HTTP/1.1 301 Moved Permanently
#3 URL https://www.stadt-koeln.de/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 0.5 ms |
| TCP Connect | 12.6 ms |
| TLS Handshake | 28.4 ms |
| Time To First Byte (TTFB) | 128.8 ms |
| Content Download | 12.1 ms |
| Total Response Time | 140.9 ms |
DNS Lookup 0.5 ms
TCP Connect 12.6 ms
TLS Handshake 28.4 ms
Time To First Byte (TTFB) 128.8 ms
Content Download 12.1 ms
Total Response Time 140.9 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| Permissions Policy | ✔ Configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
Permissions Policy ✔ Configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Stadt Köln |
| Meta Description | Willkommen bei der Stadtverwaltung Köln. Hier finden Sie Ihre Ansprechpersonen, Dienstleistungen und Informationen zu aktuellen Themen. |
| Canonical | https://www.stadt-koeln.de/index.html |
| Open Graph Description | Willkommen bei der Stadtverwaltung Köln. Hier finden Sie Ihre Ansprechpersonen, Dienstleistungen und Informationen zu aktuellen Themen. |
| Open Graph Image | https://www.stadt-koeln.de/img/layout/logo-fb.gif |
Title Stadt Köln Meta Description Willkommen bei der Stadtverwaltung Köln. Hier finden Sie Ihre Ansprechpersonen, Dienstleistungen und Informationen zu aktuellen Themen. Canonical https://www.stadt-koeln.de/index.html Open Graph Description Willkommen bei der Stadtverwaltung Köln. Hier finden Sie Ihre Ansprechpersonen, Dienstleistungen und Informationen zu aktuellen Themen. Open Graph Image https://www.stadt-koeln.de/img/layout/logo-fb.gif Detected Technologies
| Technology | Bootstrap jQuery Google Analytics Apache PHP |
Technology Bootstrap jQuery Google Analytics Apache PHP
HTTP Headers
| Expires
| Thu, 19 Nov 1981 08:52:00 GMT |
| Cache-control
| no-store, no-cache, must-revalidate |
| Pragma
| no-cache |
| Set-cookie
| PHPSESSID=3vo42p6pvsu1djmpvf8g3atjk3; path=/ |
| Last-modified
| Tue, 28 Jul 2026 14:14:24 GMT |
| Vary
| Accept-Encoding |
| Content-encoding
| gzip |
| Permissions-policy
| geolocation=(self 'https://koelngis.stadt-koeln.de') |
| Content-length
| 24693 |
| Content-type
| text/html; charset=UTF-8 |
| Date
| Tue, 28 Jul 2026 16:58:19 GMT |
| Server
| Apache |
Meta Tags
| Viewport | width=device-width, initial-scale=1 |
| Tpl | 2022-startseite |
| Sort_timestamp | 1785240864 |
| Description | Willkommen bei der Stadtverwaltung Köln. Hier finden Sie Ihre Ansprechpersonen, Dienstleistungen und Informationen zu aktuellen Themen. |
| Ss360_timestamp | 1785240864 |
| Ss360_year | 2026 |
| Ss360_date | 28.07.2026 |
| Debug_timestamp_date | 28.07.2026 14:14:24 |
| Ss360_leichte_sprache | Nein |
| Last-Modified | Tue, 28 Jul 2026 14:14:24 +0200 |
| Publication_date | 2022-06-30 |
| Geo.position | 50.938108,6.95905 |
| Geo.placename | Köln, Nordrhein-Westfalen |
| Geo.region | DE-NRW |
| Icbm | 50.938108,6.95905 |
| Application-name | Stadt Köln |
| Msapplication-TileColor | #FFFFFF |
| Msapplication-TileImage |  |
| Msapplication-starturl | https//www.stadt-koeln.de |
Expires Thu, 19 Nov 1981 08:52:00 GMT
Cache-control no-store, no-cache, must-revalidate
Pragma no-cache
Set-cookie PHPSESSID=3vo42p6pvsu1djmpvf8g3atjk3; path=/
Last-modified Tue, 28 Jul 2026 14:14:24 GMT
Vary Accept-Encoding
Content-encoding gzip
Permissions-policy geolocation=(self 'https://koelngis.stadt-koeln.de')
Content-length 24693
Content-type text/html; charset=UTF-8
Date Tue, 28 Jul 2026 16:58:19 GMT
Server Apache
