Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 91.249.233.10 |
| Server Software | IServ |
|
🔄 🟡 Long Redirect Chain | There are 5 redirects, which may affect SEO and performance. |
|
🔄 🔴 Redirect Loop Detected | The URL "https://schule-cgl.de/iserv/" redirects to itself, creating a loop. |
|
🔒 🟡 Mixed Content (1 HTTP resources) | The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers. |
|
ℹ 🔵 No Compression | The server does not use Gzip or Brotli. Enable compression to reduce bandwidth usage. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 91.249.233.10
Server Software IServ
🔄 🟡 Long Redirect Chain There are 5 redirects, which may affect SEO and performance.
🔄 🔴 Redirect Loop Detected The URL "https://schule-cgl.de/iserv/" redirects to itself, creating a loop.
🔒 🟡 Mixed Content (1 HTTP resources) The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers.
ℹ 🔵 No Compression The server does not use Gzip or Brotli. Enable compression to reduce bandwidth usage.
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://schule-cgl.de:443 | 302 | HTTP/2 302 |
| 2 | https://schule-cgl.de/iserv | 301 | HTTP/2 301 |
| 3 | https://schule-cgl.de/iserv/ | 302 | HTTP/2 302 |
| 4 | https://schule-cgl.de/iserv/auth/auth?_iserv_app_url=%2Fiserv%2F&state=eyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL3NjaHVsZS1jZ2wuZGUvaXNlcnYvIiwibm9uY2UiOiI5ZDFiNWY0Zi1mOTY5LTQ4ZjktYjFhYi1lM2Y4ODI1ZGUxMjMiLCJhZG1pbiI6ZmFsc2UsImlzcyI6Imh0dHBzOi8vc2NodWxlLWNnbC5kZS9pc2Vydi8iLCJleHAiOjE3OTI1MTQwNTgsIm5iZiI6MTc4NDczNzk5OCwiaWF0IjoxNzg0NzM4MDU4LCJzaWQiOiIifQ.K32IMbWcy-nAhhOaYYoSqW6SBoZyTjqUW5cchDLO2xFS3VW8rWmbsj7fwxdGEIiAvt0rPQosiuC-uFNSxVloyg&nonce=9d1b5f4f-f969-48f9-b1ab-e3f8825de123&client_id=d39d5bed-eb45-4682-a9ef-76b4dae252b7&redirect_uri=https%3A%2F%2Fschule-cgl.de%2Fiserv%2Fapp%2Fauthentication%2Fredirect&scope=openid%20uuid%20iserv%3Asession-id%20iserv%3Aweb-ui%20iserv%3A2fa%3Aconfiguration%20iserv%3Aaccess-groups&response_type=code | 302 | HTTP/2 302 |
| 5 | https://schule-cgl.de/iserv/auth/login?_target_path=/iserv/auth/auth?_iserv_app_url%3D%2Fiserv%2F%26client_id%3Dd39d5bed-eb45-4682-a9ef-76b4dae252b7%26nonce%3D9d1b5f4f-f969-48f9-b1ab-e3f8825de123%26redirect_uri%3Dhttps%253A%2F%2Fschule-cgl.de%2Fiserv%2Fapp%2Fauthentication%2Fredirect%26response_type%3Dcode%26scope%3Dopenid%2520uuid%2520iserv%253Asession-id%2520iserv%253Aweb-ui%2520iserv%253A2fa%253Aconfiguration%2520iserv%253Aaccess-groups%26state%3DeyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL3NjaHVsZS1jZ2wuZGUvaXNlcnYvIiwibm9uY2UiOiI5ZDFiNWY0Zi1mOTY5LTQ4ZjktYjFhYi1lM2Y4ODI1ZGUxMjMiLCJhZG1pbiI6ZmFsc2UsImlzcyI6Imh0dHBzOi8vc2NodWxlLWNnbC5kZS9pc2Vydi8iLCJleHAiOjE3OTI1MTQwNTgsIm5iZiI6MTc4NDczNzk5OCwiaWF0IjoxNzg0NzM4MDU4LCJzaWQiOiIifQ.K32IMbWcy-nAhhOaYYoSqW6SBoZyTjqUW5cchDLO2xFS3VW8rWmbsj7fwxdGEIiAvt0rPQosiuC-uFNSxVloyg | 200 | HTTP/2 200 |
#1 URL https://schule-cgl.de:443
HTTP Status Code 302
Status HTTP/2 302
#2 URL https://schule-cgl.de/iserv
HTTP Status Code 301
Status HTTP/2 301
#3 URL https://schule-cgl.de/iserv/
HTTP Status Code 302
Status HTTP/2 302
#4 URL https://schule-cgl.de/iserv/auth/auth?_iserv_app_url=%2Fiserv%2F&state=eyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL3NjaHVsZS1jZ2wuZGUvaXNlcnYvIiwibm9uY2UiOiI5ZDFiNWY0Zi1mOTY5LTQ4ZjktYjFhYi1lM2Y4ODI1ZGUxMjMiLCJhZG1pbiI6ZmFsc2UsImlzcyI6Imh0dHBzOi8vc2NodWxlLWNnbC5kZS9pc2Vydi8iLCJleHAiOjE3OTI1MTQwNTgsIm5iZiI6MTc4NDczNzk5OCwiaWF0IjoxNzg0NzM4MDU4LCJzaWQiOiIifQ.K32IMbWcy-nAhhOaYYoSqW6SBoZyTjqUW5cchDLO2xFS3VW8rWmbsj7fwxdGEIiAvt0rPQosiuC-uFNSxVloyg&nonce=9d1b5f4f-f969-48f9-b1ab-e3f8825de123&client_id=d39d5bed-eb45-4682-a9ef-76b4dae252b7&redirect_uri=https%3A%2F%2Fschule-cgl.de%2Fiserv%2Fapp%2Fauthentication%2Fredirect&scope=openid%20uuid%20iserv%3Asession-id%20iserv%3Aweb-ui%20iserv%3A2fa%3Aconfiguration%20iserv%3Aaccess-groups&response_type=code
HTTP Status Code 302
Status HTTP/2 302
#5 URL https://schule-cgl.de/iserv/auth/login?_target_path=/iserv/auth/auth?_iserv_app_url%3D%2Fiserv%2F%26client_id%3Dd39d5bed-eb45-4682-a9ef-76b4dae252b7%26nonce%3D9d1b5f4f-f969-48f9-b1ab-e3f8825de123%26redirect_uri%3Dhttps%253A%2F%2Fschule-cgl.de%2Fiserv%2Fapp%2Fauthentication%2Fredirect%26response_type%3Dcode%26scope%3Dopenid%2520uuid%2520iserv%253Asession-id%2520iserv%253Aweb-ui%2520iserv%253A2fa%253Aconfiguration%2520iserv%253Aaccess-groups%26state%3DeyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL3NjaHVsZS1jZ2wuZGUvaXNlcnYvIiwibm9uY2UiOiI5ZDFiNWY0Zi1mOTY5LTQ4ZjktYjFhYi1lM2Y4ODI1ZGUxMjMiLCJhZG1pbiI6ZmFsc2UsImlzcyI6Imh0dHBzOi8vc2NodWxlLWNnbC5kZS9pc2Vydi8iLCJleHAiOjE3OTI1MTQwNTgsIm5iZiI6MTc4NDczNzk5OCwiaWF0IjoxNzg0NzM4MDU4LCJzaWQiOiIifQ.K32IMbWcy-nAhhOaYYoSqW6SBoZyTjqUW5cchDLO2xFS3VW8rWmbsj7fwxdGEIiAvt0rPQosiuC-uFNSxVloyg
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 0.4 ms |
| TCP Connect | 19.6 ms |
| TLS Handshake | 24 ms |
| Time To First Byte (TTFB) | 81.8 ms |
| Content Download | 0 ms |
| Total Response Time | 81.9 ms |
DNS Lookup 0.4 ms
TCP Connect 19.6 ms
TLS Handshake 24 ms
Time To First Byte (TTFB) 81.8 ms
Content Download 0 ms
Total Response Time 81.9 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=63072000; |
| CSP | ✔ Configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | no-referrer |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=63072000;
CSP ✔ Configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
Referrer Policy no-referrer
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | IServ - schule-cgl.de |
| Canonical | https://schule-cgl.de/iserv/auth/login?_target_path=%2Fiserv%2Fauth%2Fauth%3F_iserv_app_url%3D%2Fiserv%2F%26client_id%3Dd39d5bed-eb45-4682-a9ef-76b4dae252b7%26nonce%3D9d1b5f4f-f969-48f9-b1ab-e3f8825de123%26redirect_uri%3Dhttps%253A%2F%2Fschule-cgl.de%2Fiserv%2Fapp%2Fauthentication%2Fredirect%26response_type%3Dcode%26scope%3Dopenid%2520uuid%2520iserv%253Asession-id%2520iserv%253Aweb-ui%2520iserv%253A2fa%253Aconfiguration%2520iserv%253Aaccess-groups%26state%3DeyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL3NjaHVsZS1jZ2wuZGUvaXNlcnYvIiwibm9uY2UiOiI5ZDFiNWY0Zi1mOTY5LTQ4ZjktYjFhYi1lM2Y4ODI1ZGUxMjMiLCJhZG1pbiI6ZmFsc2UsImlzcyI6Imh0dHBzOi8vc2NodWxlLWNnbC5kZS9pc2Vydi8iLCJleHAiOjE3OTI1MTQwNTgsIm5iZiI6MTc4NDczNzk5OCwiaWF0IjoxNzg0NzM4MDU4LCJzaWQiOiIifQ.K32IMbWcy-nAhhOaYYoSqW6SBoZyTjqUW5cchDLO2xFS3VW8rWmbsj7fwxdGEIiAvt0rPQosiuC-uFNSxVloyg |
Title IServ - schule-cgl.de
Canonical https://schule-cgl.de/iserv/auth/login?_target_path=%2Fiserv%2Fauth%2Fauth%3F_iserv_app_url%3D%2Fiserv%2F%26client_id%3Dd39d5bed-eb45-4682-a9ef-76b4dae252b7%26nonce%3D9d1b5f4f-f969-48f9-b1ab-e3f8825de123%26redirect_uri%3Dhttps%253A%2F%2Fschule-cgl.de%2Fiserv%2Fapp%2Fauthentication%2Fredirect%26response_type%3Dcode%26scope%3Dopenid%2520uuid%2520iserv%253Asession-id%2520iserv%253Aweb-ui%2520iserv%253A2fa%253Aconfiguration%2520iserv%253Aaccess-groups%26state%3DeyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL3NjaHVsZS1jZ2wuZGUvaXNlcnYvIiwibm9uY2UiOiI5ZDFiNWY0Zi1mOTY5LTQ4ZjktYjFhYi1lM2Y4ODI1ZGUxMjMiLCJhZG1pbiI6ZmFsc2UsImlzcyI6Imh0dHBzOi8vc2NodWxlLWNnbC5kZS9pc2Vydi8iLCJleHAiOjE3OTI1MTQwNTgsIm5iZiI6MTc4NDczNzk5OCwiaWF0IjoxNzg0NzM4MDU4LCJzaWQiOiIifQ.K32IMbWcy-nAhhOaYYoSqW6SBoZyTjqUW5cchDLO2xFS3VW8rWmbsj7fwxdGEIiAvt0rPQosiuC-uFNSxVloyg
Detected Technologies
| Technology | Google Analytics |
Technology Google Analytics
HTTP Headers
| Content-type
| text/html; charset=UTF-8 |
| Cache-control
| max-age=0, must-revalidate, private |
| Date
| Wed, 22 Jul 2026 16:34:18 GMT |
| Content-security-policy
| default-src 'self'; img-src 'self' data:; media-src 'self' blob:; connect-src 'self' blob:; form-action 'self'; |
| X-content-security-policy
| default-src 'self'; img-src 'self' data:; media-src 'self' blob:; connect-src 'self' blob:; form-action 'self'; |
| Referrer-policy
| no-referrer |
| X-frame-options
| SAMEORIGIN |
| X-content-type-options
| nosniff |
| X-xss-protection
| 1; mode=block |
| Expires
| Wed, 22 Jul 2026 16:34:18 GMT |
| Server
| IServ |
| Strict-transport-security
| max-age=63072000; |
Meta Tags
| Viewport | width=device-width, initial-scale=1.0 |
| Color-scheme | light dark |
| X-UA-Compatible | ie=edge |
| Msapplication-TileImage |  |
| Apple-mobile-web-app-title | IServ |
| Application-name | IServ |
| Msapplication-TileColor | #da532c |
| Theme-color | #1c4174 |
Content-type text/html; charset=UTF-8
Cache-control max-age=0, must-revalidate, private
Date Wed, 22 Jul 2026 16:34:18 GMT
Content-security-policy default-src 'self'; img-src 'self' data:; media-src 'self' blob:; connect-src 'self' blob:; form-action 'self';
X-content-security-policy default-src 'self'; img-src 'self' data:; media-src 'self' blob:; connect-src 'self' blob:; form-action 'self';
Referrer-policy no-referrer
X-frame-options SAMEORIGIN
X-content-type-options nosniff
X-xss-protection 1; mode=block
Expires Wed, 22 Jul 2026 16:34:18 GMT
Server IServ
Strict-transport-security max-age=63072000;
