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.
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: /deals/
Disallow: /prototype
Disallow: /test/
User-agent: googlebot-news
Disallow: /
Disallow: /magazine/*/thema/
Allow: /magazine/
Allow: /amp/
Allow: /$
User-agent: AI2Bot
User-agent: Ai2Bot
User-agent: Amazonbot
User-agent: Applebot-Extended
User-agent: CCBot
User-agent: Cincraw
User-agent: ClaudeBot
User-agent: cohere-ai
User-agent: Diffbot
User-agent: FriendlyCrawler
User-agent: GPTBot
User-agent: ImagesiftBot
User-agent: img2dataset
User-agent: Meta-ExternalAgent
User-agent: PetalBot
User-agent: Semanticbot
User-agent: TimpiBot
User-agent: VelenPublicWebCrawler
User-agent: Yandex
Disallow: /magazine/
Allow: /magazine/in-eigener-sache/
Allow: /magazine/unicef/
Allow: /magazine/so-arbeitet-die-redaktion/
No sitemap found
Adding a sitemap helps search engines discover your pages.
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations155 days until leaf cert expires — 2 issues to addressREVIEW
Certificate validity
Recommended actions
- Submit your domain to hstspreload.org to be added to the Chrome preload list
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+DNS Records1 A records, 45 ms lookupPASS
| A | 82.165.229.87 |
| AAAA | — |
| CNAME | — |
| NS | ns-gmx.ui-dns.com, ns-gmx.ui-dns.org, ns-gmx.ui-dns.biz, ns-gmx.ui-dns.de |
| MX | 10 mx01.emig.gmx.net 10 mx00.emig.gmx.net |
| TXT | _y2d5dltm3p20lx7wcyricp3kznhs9h8 _y2d5dltm3p20lx7wcyricp3kznhs9h8 179gjz475x3lvxbtsv2mn24vc1l1q9tb vxxrjnnhhz1vd8r51zps6swntc43k2j1 facebook-domain-verification=scdn4fwr0on3j97l5py9vp9raerciu w7v6rl78mskdw1fk8t8cllpj5fv39ngc google-site-verification=-X7cUj6mlDVPON6zf57-7HVItFAApOOxjv5HMcGO_qQ google-site-verification=J0NZ2F6kdhXzsguHSKZTm3CWujnrImftkDG3zhz14g0 google-site-verification=hfRWhDjYh9zG3LL_izYa1DCJQQgm3oqyn3Tn_hDr59Q SPF v=spf1 redirect=_spf.gmx.net Trustpilot-Verification-kqvVskCm6JQ9Vg1qAmahpBSJ5tvZORbriFyVIk4E |
| 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.
ARedirect Chain1 redirect(s), 471 ms totalPASS
https://gmx.net
105 ms · HTTP/1.1
https://www.gmx.net/
366 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://gmx.net | 301 | 105 ms | HTTP/1.1 | Apache |
| 2 | https://www.gmx.net/ | 200 | 366 ms | HTTP/1.1 | Apache |
See the visual redirect chain in the HTTP Probe tab →
A+Domain Intelligencegmx.net — via World4You Internet Services GmbH, 27 years, 9 months old, hosted on IONOSPASS
175 days
December 8, 2026
155 days
Issued by Deutsche Telekom Security GmbH
27 years, 9 months
Registered December 9, 1998
Enabled
Protects against DNS spoofing
IONOS
ASN AS8560
82.165.229.87
World4You Internet Services GmbH
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