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: /gate/
Disallow: /onex/
User-agent: bingbot
Disallow: /suche/
User-agent: GPTBot
Disallow: /kundenbewertungen/
User-agent: ChatGPT-User
Disallow: /kundenbewertungen/
User-agent: OAI-Searchbot
Disallow: /kundenbewertungen/
User-agent: PerplexityBot
Disallow: /kundenbewertungen/
User-agent: Perplexity-User
Disallow: /kundenbewertungen/
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 & Recommendations333 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 Records3 A records, 76 ms lookupPASS
| A | 35.159.1.65, 63.178.176.186, 18.185.61.87 |
| AAAA | — |
| CNAME | — |
| NS | ns1-193.akam.net, ns7-66.akam.net, ns4-67.akam.net, ns2-65.akam.net |
| MX | 50 otto-de.mail.protection.outlook.com |
| TXT | miro-verification=bdc9cd9f80167223093040082fce9f70cb15a22c atlassian-domain-verification=XuvfFNPt8O1LGWHgmu6drxqQRbfQGX4Dr2Ot8f9rgaA2FemHHZ... mongodb-site-verification=XP5hVwaaialm2di9r4ME8FEBAgoydmWc google-site-verification=mwRR8O8tb2xn2nbAuVoFRXq3FvQG8TBXVfvao9Ws6dY wiz-domain-verification=084961cf6a9943467022b6e4e254206d89ccca15ebf3b26fbcda38cf... w/u0tIPwCWqtaT33cfLaDRI4cUHazVnFGfjZSvZs5J409OjBQgoS6SifMXSef28udDpQymTVQsX2gktj... SPF v=spf1 ip4:80.85.192.0/20 include:spf.hornetsecurity.com include:spf.protection.... facebook-domain-verification=j70v29fpjg4ojg80gbifqw1eego33r figma-domain-verification=a7779162ff855ae8f5aca8708caa598f1d994bcd54c597f3816230... amazonses:mIH7OVHQO2F5WChOVyD79u9apTHT6sbf7e2VZ9NtvsA= CTxuSaM2ovKYyOHyjzvyQ0f9brbx1ug7SugtgTUplebg9BFi1Vtkj5o/qoiuVxKuAUUWEaoNuR4awzrs... adobe-idp-site-verification=86e3d89586a3c84e183be6ac5f4ecb05d1011a5b6df236931e04... apple-domain-verification=siseb2WuYlAhQ1Js docker-verification=dd370709-def2-48e6-bfe6-ceafcf66e031 QCbesHKcvkL0B5iRm1w3tj7P1PyQAorD MS=ms67614880 dtm-domain-verification=mM876KNtSp0KQQYotikNG6TPTIoaSmKM_7lgUENJM_o 00D9b00000SfmQL=1TB9b00000008wr;00D2o000000kAmU=1TBTr00000004Jl google-site-verification=uhp66_5IP66csx6AefbIEaCUbgfvZ6gffnAwJj3IX5c |
| CAA | Lookup not available with standard resolver |
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), 265 ms totalPASS
https://otto.de
94 ms · HTTP/1.1
https://www.otto.de/
170 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://otto.de | 301 | 94 ms | HTTP/1.1 | Varnish |
| 2 | https://www.otto.de/ | 200 | 170 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+Domain Intelligenceotto.de — hosted on AWSPASS
Unknown
333 days
Issued by DigiCert Inc
Unknown
Status unknown
Protects against DNS spoofing
AWS
ASN AS16509
63.178.176.186
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