Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
BRedirect Chain2 redirect(s), 774 ms totalREVIEW
https://niedersachsen.de
174 ms · HTTP/1.1
https://www.niedersachsen.de/
264 ms · HTTP/1.1
https://www.niedersachsen.de/startseite/
336 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://niedersachsen.de | 301 | 174 ms | HTTP/1.1 | Apache |
| 2 | https://www.niedersachsen.de/ | 301 | 264 ms | HTTP/1.1 | Apache |
| 3 | https://www.niedersachsen.de/startseite/ | 200 | 336 ms | HTTP/1.1 | Apache |
See the visual redirect chain in the HTTP Probe tab →
Each redirect adds latency. Try to minimize the chain to 1 hop.
Redirect chain — each hop adds latency; combine into one redirect where possible.
Source: Google Search Central / web.dev
CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
BCrawlabilityrobots.txt present, no sitemapREVIEW
A sitemap helps search engines discover and index your pages more efficiently.
No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.
Learn more ▾ ▴
A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.
Source: sitemaps.org / Google Search Central
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
User-agent: *
Disallow: /test/
Disallow: /ps/
Disallow: /public/
Disallow: /themen/geld_kredit/geschaeftsfelder/aufgaben_kreditreferats/kontoverbindungen-fuer-das-geld--kredit-und-derivatgeschaeft-des-landes-1460.html
Disallow: /themen/geld_kredit/geschaeftsfelder/aufgaben_kreditreferats/1460.html
No sitemap found
Adding a sitemap helps search engines discover your pages.
BTLS Certificate Expiry & Recommendations181 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
- Enable DNSSEC on your domain for DNS spoofing protection
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+DNS Records1 A records, 71 ms lookupPASS
| A | 80.228.49.173 |
| AAAA | — |
| CNAME | — |
| NS | ns-b.niedersachsen.de, ns-a.niedersachsen.de |
| MX | 5 inetmail23.niedersachsen.de 5 inetmail14.niedersachsen.de 5 inetmail13.niedersachsen.de |
| TXT | SPF v=spf1 ip4:80.228.49.0/27 ip4:80.228.54.224/28 ip4:195.37.198.224/28 -all google-site-verification=h8sQpJqduU0c_OLgTA4fZBZV48mS40fiV2f0wGlp4Wk _telesec-domain-validation=334768_2024-04-25_mHECm8zL0ThwT35mmXhyQdsCLSaUGWWwzRe... 7a9d806ff712f12fc638e5f1cb4711908619592f4dcd35ec91cca13b83d9d7b a970c57d49ee64d1656b4678113a82769e44f1cbdf6d5649e3e5318bdb6aaf5 _4vq7izdhpi3rnz8avjgr8nsdhz866y7 MS=ms78488956 _telesec-domain-validation=358116_2026-03-16_rjcJmlKR6t0pKtyNuD9cJFPhTUghgQ8oEgG... _telesec-domain-validation=319276_2023-04-25_FfBYJaZH9GjsoBgCzfqB2nHApsX7Eq8fRp4... _telesec-domain-validation=345947_2025-03-17_O2nNgncSSkPiO4hfcHieRYGQQHpzZZWyAjZ... swisssign-check=7qBb8BnrkJH-9tQ5WhfvBvvyqzo 9f94f6011ceca57d4786900a942c4ec6f938db1f9ec3adfda48c236909e13a8 cisco-ci-domain-verification=40cd14245a352a1238579515709398e1ed95f2ee2e3bc9d0211... 26c8ed7898afe9d17c347120a41f46de9422fa129f94b69867c8b7a4fb07d43 9760dfa889dda593bd7eb829f4658071a09e4651cfa7226348720a062176c68 |
| CAA | Lookup not available with standard resolver |
Multiple A records provide failover if one server goes down.
Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.
Learn more ▾ ▴
Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.
Source: SRE practice / DNS architecture
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligenceniedersachsen.de — hosted on EWETEL, DEPASS
Unknown
181 days
Issued by Hellenic Academic and Research Institutions CA
Unknown
Status unknown
Protects against DNS spoofing
EWETEL, DE
ASN AS9145
80.228.49.173
Registrar unknown
Expiry timeline
Recommended actions
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.
Learn more ▾ ▴
Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.
Source: ICANN / domain-security best practice