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), 314 ms totalREVIEW
https://kfw.de
89 ms · HTTP/1.1
https://www.kfw.de/
132 ms · HTTP/1.1
https://www.kfw.de/kfw.de.html
93 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://kfw.de | 301 | 89 ms | HTTP/1.1 | |
| 2 | https://www.kfw.de/ | 301 | 132 ms | HTTP/1.1 | |
| 3 | https://www.kfw.de/kfw.de.html | 200 | 93 ms | HTTP/1.1 |
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
BTLS Certificate Expiry & Recommendations157 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
- 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, 57 ms lookupPASS
| A | 104.151.29.97 |
| AAAA | — |
| CNAME | — |
| NS | c.ns14.net, d.ns14.net, b.ns14.net, a.ns14.net |
| MX | 10 mx10.kfw.de 20 mx20.kfw.de |
| TXT | infoblox-domain-mastery=b8b91e23187d78cd262f1024517ef0315cd666d4ec6f99341028d020... google-site-verification=ZBj4d0Xkl0mITGCDrcIZcvhQbiUmUpzUPMuZAQv4hAk ACFC7D8AF98CB16A994242FDE48A295A67A9EE5C7BD6E369693900C4AAF170EF SPF v=spf1 mx -all globalsign-domain-verification=AAEXO52qAxrphJMlCSGr3pL1uOL477DWTzMCyTzaDF apple-domain-verification=w7wMItdptkF2a3bG |
| 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+Crawlabilityrobots.txt present, sitemap with 509 URLsPASS
User-agent: *
Allow: /Technische-Seiten/Sitemap*
Allow: /nachhaltigkeit/Technische-Seiten/Sitemap*
Allow: /inlandsfoerderung/Technische-Seiten/Sitemap*
Allow: /partner/Technische-Seiten/Sitemap*
Allow: /Technische-Medien/templatemedia/Responsive/
Allow: /microsites/Microsite/nachhaltigkeitsbericht.kfw.de/
Sitemap: https://www.kfw.de/Technische-Seiten/Sitemap-XML.xml
Sitemap: https://www.kfw.de/partner/Technische-Seiten/Sitemap-XML.xml
Sitemap: https://www.kfw.de/inlandsfoerderung/Technische-Seiten/Sitemap-XML.xml
Sitemap: https://www.kfw.de/nachhaltigkeit/Technische-Seiten/Sitemap-XML.xml
Sitemap: https://www.kfw.de/sitemap-index.xml
Disallow: /OBT/
Disallow: /Tools/
Disallow: /%C3%9Cber-die-KfW/Formulare/
Disallow: /Technische-Seiten/
Disallow: /inlandsfoerderung/_dummy/
Disallow: /Inhaltselemente/
Disallow: /inlandsfoerderung/Tools/
Disallow: /inlandsfoerderung/Technische-Seiten/
Disallow: /inlandsfoerderung/Allgemeine-Seiten/
Disallow: /nachhaltigkeit/Dokumente/KEa4/Alte-Sektorleitlinien/
Disallow: /inlandsfoerderung/Formulare/
Disallow: /KfW-Konzern/Formulare/
Disallow: /partner/KfW-Partnerportal/Formulare/
Disallow: /zinsen/
Disallow: /nachhaltigkeit/Technische-Seiten/
Disallow: /partner/Technische-Seiten/
Disallow: /*Disclaimer
Disallow: /pdfgen/
Disallow: /usv-kfw/
Disallow: /Technische-Medien/
Disallow: /Inlandsfoerderung/Technische-Medien/
Disallow: /*bildrechte
Disallow: /Bildrechte/
Disallow: /s/
Disallow: /microsites/
Disallow: /*?redirect
Disallow: /*?kfwmc
Disallow: /*?kfwnl
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencekfw.de — hosted on VERSATEL, DEPASS
Unknown
157 days
Issued by Deutsche Telekom Security GmbH
Unknown
Status unknown
Protects against DNS spoofing
VERSATEL, DE
ASN AS8881
104.151.29.97
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