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 Chain1 redirect(s), 1105 ms totalREVIEW
https://united-domains.de
296 ms · HTTP/1.1
https://www.united-domains.de/
809 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://united-domains.de | 301 | 296 ms | HTTP/1.1 | |
| 2 | https://www.united-domains.de/ | 200 | 809 ms | HTTP/1.1 | UDAG Webserver |
See the visual redirect chain in the HTTP Probe tab →
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
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations290 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
ADNS Records1 A records, 209 ms lookupPASS
| A | 89.31.137.221 |
| AAAA | — |
| CNAME | — |
| NS | ns.udag.net, ns.udag.org, ns.udag.de |
| MX | 10 smxint2.united-domains.de 10 smxint1.united-domains.de 100 smxint3.united-domains.de |
| TXT | google-site-verification=oNF4AsgJCxi6vIPPPBNllo6iil1rnkmZgQulOWMjLJ4 knowbe4-site-verification=ea92e091b44a2e728b98725e65e73528 p8t5rtswr34q8rn19whz5k60v5vdr2z6 google-site-verification=_6kh3mGJ33fAgARQjhMd56ezG5gULvImmLloSV4tD6A MS=ms51440287 google-site-verification=PK740yL3nFNEVJ3IN8zSYz1ZWOt7oYNg7utOzGps6Yg google-site-verification=1mRO6IITyX8Ug1NgmRHFVbcgjcqnQjZegsU2uChCJko w4pl30pwb2w8jrdvz2wqytv707yz607j SPF v=spf1 a:united-domains.managed-otrs.com ip4:82.135.96.208/28 ip4:80.152.226.24 ... atlassian-domain-verification=KAEkvhtoErKIDdiyb7e0wzavuISNOteHVzuoJX6M4VNN5REeLH... _xbng04g3oajsqj39peb49y1xm34i9zw figma-domain-verification=7af83650ad036be825af0d1a18d9909d2dc836a1e3cd2b60df37dc... _hs082p1ipgv3yzum0jw7u34f8gg13l7 _4bl1u5wqs2j9to6r4g2m98wqsjbhqlf anthropic-domain-verification-y5gn3r=iJS0VqVLOqPV7zwym77csOFot MS=ms79551341 browserstack-domain-verification=32997fee-8e72-4aee-8562-b04436e143ad |
| 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.
Slow DNS adds latency to every page load. Consider a faster DNS provider.
DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.
Source: DNS performance benchmarks
A+Crawlabilityrobots.txt present, sitemap with 691 URLsPASS
User-agent: *
Disallow: /whois/
Disallow: /agb/
Disallow: /*.pdf$
Disallow: /fehler
Disallow: /*forum-showposts-*
Disallow: /*downloads-show-*
Disallow: /*forum-inform-*
Disallow: /*user-details-*
Disallow: /*forum-aeit-*
Disallow: /*?etcc_med_onsite=*
Disallow: /*?target_page=*
Disallow: /*user-*
Disallow: /*pfapi/
Disallow: /*ipayment/
Disallow: /*otrsapi/
Disallow: /*internal-api/
Disallow: /*mailbounceapi/
Disallow: /*tldapi/
Disallow: /suchergebnis
Disallow: /domain-search-form
Disallow: /?is-single-search-
Disallow: /?order_id-
Disallow: /?identifier-
Disallow: /?partner-
Disallow: /?area-
Disallow: /?sc_src-
Disallow: /?_x_tr_sl-
Disallow: /?msclkid-
Disallow: /user-
Disallow: /wordpress/faq
Sitemap: https://www.united-domains.de/sitemap.xml
Sitemap: https://www.united-domains.de/blog/sitemap_index.xml
Sitemap: https://www.united-domains.de/help/sitemap_index.xml
User-agent: jobs.de-Robot
Disallow: /
Allow: /jobs/
A+Domain Intelligenceunited-domains.de — hosted on IPX-AS15598, DEPASS
Unknown
290 days
Issued by Sectigo Limited
Unknown
Status unknown
Protects against DNS spoofing
IPX-AS15598, DE
ASN AS15598
89.31.137.221
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