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https://rki.de

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
85
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from Madrid, Spain
302 Found
Checks
9
5 PASS 3 REVIEW 1 FIX
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

B
Redirect Chain
2 redirect(s), 283 ms total
REVIEW
2 redirect(s), 283 ms total
Warning::
2 redirects before reaching final URL
Each redirect adds latency. Try to minimize the chain to 1 hop.
Info::
WWW normalization redirect
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://rki.de

https://rki.de

100 ms · HTTP/1.1

302

https://www.rki.de/

149 ms · HTTP/1.1

302

https://www.rki.de/DE/Home/home_node.htm...

34 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://rki.de302100 msHTTP/1.1Apache
2https://www.rki.de/302149 msHTTP/1.1Apache
3https://www.rki.de/DE/Home/home_node.htm...20034 msHTTP/1.1Apache

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more ▾

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
TLS Certificate Expiry & Recommendations
182 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

182
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • 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 Records
1 A records, 48 ms lookup
PASS
1 A records, 48 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 80.245.144.175
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
2 nameserver(s) configured
Got: deneb.dfn.de, vaccine.rki.de
Info::
2 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 48 ms
Got: 48 ms
A80.245.144.175
AAAA—
CNAME—
NSdeneb.dfn.de, vaccine.rki.de
MX
10 mx1.bund.de
20 mx2.bund.de
TXT
google-site-verification=daMVhGzBTb-LxUtJkwOVyaF-_9ItCmcuOY3LodcKT9E
cisco-ci-domain-verification=637b053ef7a92dadb1f70c60b8a1fe932d3317d631821f432f0...
MS=423EBBEF04959705AA5CE2A5A38741A85C6687C9
SPF v=spf1 mx ip4:77.87.228.72/29 ip4:77.87.224.104/29 ~all
apple-domain-verification=jEl3WtjCIqFiTRUU
CAALookup not available with standard resolver
Resolved in 48 ms

Multiple A records provide failover if one server goes down.

Why this matters

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.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A+
Crawlability
robots.txt present, sitemap with 9 URLs
PASS
robots.txt present, sitemap with 9 URLs
Info::
robots.txt is present
Got: 238 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 9 entries
Info::
Sitemap index with 9 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 238 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /SiteGlobals/
Disallow: /DE/Service/
Disallow: /EN/Service/
Allow: /SiteGlobals/Modules/
Allow: /SiteGlobals/StyleBundles/
Allow: /SiteGlobals/Frontend/
Crawl-delay: 30
Sitemap: https://www.rki.de/Sitemap_Index.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 9 entries Valid XML Yes
Child Sitemaps:
A
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

302https://www.rki.de/
200https://rki.de/

Preferred variant: non-www

HTTP → HTTPS

302http://rki.de/ → https://rki.de/

Use 301 (permanent) instead of 302 (temporary)

A+
Domain Intelligence
rki.de — hosted on ITZBUND, DE
PASS
rki.de — hosted on ITZBUND, DE
Warning::
Registrar lock is NOT enabled
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.
Info::
Hosting: ITZBUND, DE
Got: AS35704
Domain expiry

Unknown

SSL certificate

182 days

Issued by D-Trust GmbH

Domain age

Unknown

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

ITZBUND, DE

ASN AS35704

80.245.144.175

Registrar

Registrar unknown

Unlocked Name servers unknown
Expiry timeline
Today
+1 year
SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar
Hosting
IP Address 80.245.144.175
ASN AS35704 (ITZBUND, DE)
Provider ITZBUND, DE
Data source: whois (0.9s)

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.

Why this matters

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

A+
HTTP Probe Timing
Total 141 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
42 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
30 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
37 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
141 ms
Total Time Total request time from DNS lookup through full response.
141 ms

Connection waterfall

DNS Lookup 42 ms TCP Connect 30 ms TLS Handshake 37 ms Server Processing 33 ms Content Transfer 0 ms
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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