Skip to main content
SGSiteGraph

schulserver.de

Redirecting to /iserv/auth/login?_target_path=/iserv/auth/auth?_iserv_app_url%3D%2Fiserv%2F%26client_id%3De91958dd-8e7f-4a18-b1c8-380934721824%26nonce%3D5817d773-5de5-472f-9492-c226401f6746%26redirect_uri%3Dhttps%253A%2F%2Fiserv.schulserver.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.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsIm5vbmNlIjoiNTgxN2Q3NzMtNWRlNS00NzJmLTk0OTItYzIyNjQwMWY2NzQ2IiwiYWRtaW4iOmZhbHNlLCJpc3MiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsImV4cCI6MTc5Mjg0MjQ0NSwibmJmIjoxNzg1MDY2Mzg1LCJpYXQiOjE3ODUwNjY0NDUsInNpZCI6IiJ9.VuSbXWTP8uHKQBpo4nYWJmwLRzviKb0BVUj0Uoh0FV26p1tMehsoJi7D9AfQEnD57iE4TH_Ee1amYCnbnXi_NQ

Last scanned Jul 26, 2026, 5:17 AM · 1 view

76

Overall score

Fair

Summary

This website is hosted on HETZNER-AS - Hetzner Online GmbH, DE. SEO is poor (45/100) and accessibility is good (75/100). Security scores excellent (100/100) and performance excellent (90/100). Top issue: Title longer than 60 characters.

Germany
Hosted on HETZNER-AS - Hetzner Online GmbH, DE

Top issues to fix

10 issues found · 3 high priority

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Title longer than 60 characters

    SEO

    Shorten the title to under 60 characters so search results don't truncate it.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+4 more issues — details in the sections below.

45

SEO

8 issue(s) found

90

Performance

2.08 s

100

Security

HTTPS & header checks

75

Accessibility

3 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Meta tags

Title
Redirecting to /iserv/auth/login?_target_path=/iserv/auth/auth?_iserv_app_url%3D%2Fiserv%2F%26client_id%3De91958dd-8e7f-4a18-b1c8-380934721824%26nonce%3D5817d773-5de5-472f-9492-c226401f6746%26redirect_uri%3Dhttps%253A%2F%2Fiserv.schulserver.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.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsIm5vbmNlIjoiNTgxN2Q3NzMtNWRlNS00NzJmLTk0OTItYzIyNjQwMWY2NzQ2IiwiYWRtaW4iOmZhbHNlLCJpc3MiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsImV4cCI6MTc5Mjg0MjQ0NSwibmJmIjoxNzg1MDY2Mzg1LCJpYXQiOjE3ODUwNjY0NDUsInNpZCI6IiJ9.VuSbXWTP8uHKQBpo4nYWJmwLRzviKb0BVUj0Uoh0FV26p1tMehsoJi7D9AfQEnD57iE4TH_Ee1amYCnbnXi_NQ
Description
Canonical
Language
Charset
UTF-8
Viewport
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

CDN provider
—
IP address
116.203.134.179
ASN
AS24940 (HETZNER-AS - Hetzner Online GmbH, DE)

DNS records

TypeValue
A
  • 116.203.134.179
AAAA
  • 2a01:4f8:c2c:2834::1
MX
  • iserv.schulserver.de
  • offline.iserv.eu
TXT
  • MS=ms35756790
  • v=spf1 a mx a:relay1.iserv.eu a:relay2.iserv.eu a:relay3.iserv.eu a:relaybs.iserv.eu ?all
NS
  • ns2.iserv.eu
  • ns4.iserv.eu
  • ns3.iserv.eu
  • ns1.iserv.eu
CAA
  • 128 issue "letsencrypt.org"
  • 128 issuewild "letsencrypt.org"
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
schulserver.de
Valid from
Jul 8, 2026
Valid to
Oct 6, 2026
Days until expiry
71
SAN domains
*.ausleihe-api.iserv.schulserver.de, *.ausleihe.iserv.schulserver.de, *.autoconfig.iserv.schulserver.de, *.autodiscover.iserv.schulserver.de, *.brainyoo.iserv.schulserver.de, *.cal.iserv.schulserver.de, *.cloudfiles.iserv.schulserver.de, *.dav.iserv.schulserver.de, *.excalidraw.iserv.schulserver.de, *.idm.iserv.schulserver.de, *.imap.iserv.schulserver.de, *.iserv.iserv.schulserver.de, *.libreoffice.iserv.schulserver.de, *.mail-backend.iserv.schulserver.de, *.mail.iserv.schulserver.de, *.pop.iserv.schulserver.de, *.pop3.iserv.schulserver.de, *.schulserver.de, *.smtp.iserv.schulserver.de, *.webdav.iserv.schulserver.de, *.wpad.iserv.schulserver.de, *.www.iserv.schulserver.de, ausleihe-api.iserv.schulserver.de, ausleihe.iserv.schulserver.de, autoconfig.iserv.schulserver.de, autodiscover.iserv.schulserver.de, brainyoo.iserv.schulserver.de, cal.iserv.schulserver.de, cloudfiles.iserv.schulserver.de, dav.iserv.schulserver.de, excalidraw.iserv.schulserver.de, idm.iserv.schulserver.de, imap.iserv.schulserver.de, iserv.iserv.schulserver.de, libreoffice.iserv.schulserver.de, mail-backend.iserv.schulserver.de, mail.iserv.schulserver.de, pop.iserv.schulserver.de, pop3.iserv.schulserver.de, schulserver.de, smtp.iserv.schulserver.de, webdav.iserv.schulserver.de, wpad.iserv.schulserver.de, www.iserv.schulserver.de

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyMissing

Compression: none · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

1 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

0 scripts · 0 stylesheets

JS / CSS size

0 B · 0 B

Page size

3.6 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Title longer than 60 characters
  • Missing meta description
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • No H1 heading found
  • Missing <html lang> attribute
  • Missing viewport meta tag

Scan details

Requested URL
https://schulserver.de
Final URL
https://iserv.schulserver.de/iserv/auth/auth?_iserv_app_url=%2Fiserv%2F&state=eyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsIm5vbmNlIjoiNTgxN2Q3NzMtNWRlNS00NzJmLTk0OTItYzIyNjQwMWY2NzQ2IiwiYWRtaW4iOmZhbHNlLCJpc3MiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsImV4cCI6MTc5Mjg0MjQ0NSwibmJmIjoxNzg1MDY2Mzg1LCJpYXQiOjE3ODUwNjY0NDUsInNpZCI6IiJ9.VuSbXWTP8uHKQBpo4nYWJmwLRzviKb0BVUj0Uoh0FV26p1tMehsoJi7D9AfQEnD57iE4TH_Ee1amYCnbnXi_NQ&nonce=5817d773-5de5-472f-9492-c226401f6746&client_id=e91958dd-8e7f-4a18-b1c8-380934721824&redirect_uri=https%3A%2F%2Fiserv.schulserver.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
302
HTTP version
HTTP/2
Response time
2.08 s
HTML size
3.6 KB
Redirect chain
https://schulserver.de → https://schulserver.de/iserv → https://schulserver.de/iserv/ → https://iserv.schulserver.de/iserv/ → https://iserv.schulserver.de/iserv/auth/auth?_iserv_app_url=%2Fiserv%2F&state=eyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsImtpZCI6IjEifQ.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsIm5vbmNlIjoiNTgxN2Q3NzMtNWRlNS00NzJmLTk0OTItYzIyNjQwMWY2NzQ2IiwiYWRtaW4iOmZhbHNlLCJpc3MiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsImV4cCI6MTc5Mjg0MjQ0NSwibmJmIjoxNzg1MDY2Mzg1LCJpYXQiOjE3ODUwNjY0NDUsInNpZCI6IiJ9.VuSbXWTP8uHKQBpo4nYWJmwLRzviKb0BVUj0Uoh0FV26p1tMehsoJi7D9AfQEnD57iE4TH_Ee1amYCnbnXi_NQ&nonce=5817d773-5de5-472f-9492-c226401f6746&client_id=e91958dd-8e7f-4a18-b1c8-380934721824&redirect_uri=https%3A%2F%2Fiserv.schulserver.de%2Fiserv%2Fapp%2Fauthentication%2Fredirect&scope=openid%20uuid%20iserv%3Asession-id%20iserv%3Aweb-ui%20iserv%3A2fa%3Aconfiguration%20iserv%3Aaccess-groups&response_type=code → https://iserv.schulserver.de/iserv/auth/login?_target_path=/iserv/auth/auth?_iserv_app_url%3D%2Fiserv%2F%26client_id%3De91958dd-8e7f-4a18-b1c8-380934721824%26nonce%3D5817d773-5de5-472f-9492-c226401f6746%26redirect_uri%3Dhttps%253A%2F%2Fiserv.schulserver.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.eyJyZWRpcmVjdF91cmkiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsIm5vbmNlIjoiNTgxN2Q3NzMtNWRlNS00NzJmLTk0OTItYzIyNjQwMWY2NzQ2IiwiYWRtaW4iOmZhbHNlLCJpc3MiOiJodHRwczovL2lzZXJ2LnNjaHVsc2VydmVyLmRlL2lzZXJ2LyIsImV4cCI6MTc5Mjg0MjQ0NSwibmJmIjoxNzg1MDY2Mzg1LCJpYXQiOjE3ODUwNjY0NDUsInNpZCI6IiJ9.VuSbXWTP8uHKQBpo4nYWJmwLRzviKb0BVUj0Uoh0FV26p1tMehsoJi7D9AfQEnD57iE4TH_Ee1amYCnbnXi_NQ

See something wrong on this report? Request a correction

Related websites

Same hosting provider

rebounce.ai

rebounce.ai | AI-based Bounce Management for E-Commerce

100
apachephp
HETZNER-AS - Hetzner Online GmbH, DE

dgb.de

Deutscher Gewerkschaftsbund | DGB

100
apache
HETZNER-AS - Hetzner Online GmbH, DE

browsec.com

VPN Service | Privacy and Security Online | Browsec VPN

100
nginxgoogle-analyticsrails
HETZNER-AS - Hetzner Online GmbH, DE

dnsforge.de

dnsforge.de – Öffentlicher DNS-Resolver aus Deutschland

100
nginx
HETZNER-AS - Hetzner Online GmbH, DE

internetamsterdam.nl

internetamsterdam.nl — Premium .nl domein te koop of lease

99
phpmeta-pixelgoogle-analytics
HETZNER-AS - Hetzner Online GmbH, DE· Cloudflare

strawpoll.com

StrawPoll - Create a Poll in Seconds

99
nginx
HETZNER-AS - Hetzner Online GmbH, DE

Frequently asked questions

What technology does schulserver.de use?
We did not detect any specific technologies for schulserver.de in the latest scan.
Is schulserver.de secure (HTTPS)?
Yes. schulserver.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 6, 2026.
Who hosts schulserver.de?
schulserver.de is hosted on HETZNER-AS - Hetzner Online GmbH, DE.
What is schulserver.de's SEO score?
schulserver.de scored 45/100 for SEO in the latest analysis (poor).
What is schulserver.de's overall website score?
schulserver.de has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.