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https://wdr.de

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
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.

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
Crawlability
robots.txt present, no sitemap
REVIEW
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 1590 bytes
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

A sitemap helps search engines discover and index your pages more efficiently.

Why this matters

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.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 1590 B Sitemaps referenced 0 User-agents DiffBot, DuckAssistBot, omgilibot, *, Claude-User, claude-web, FacebookBot, GPTBot, omgili, Amazonbot, meta-externalagent, MistralAI-User, PerplexityBot, Perplexity-User, Webzio-Extended, ClaudeBot, OAI-SearchBot, anthropic-ai, TikTokSpider, cohere-training-data-crawler, Google-Extended, PanguBot, ChatGPT-User, ChatGPT-User/2.0, CCBot, Applebot-Extended, Bytespider, cohere-ai, PetalBot, Meta-ExternalFetcher, YouBot, Scrapy, ICCrawler - iCjobs, Claude-SearchBot Blocking No — crawling allowed
User-agent: Amazonbot
Disallow: /
User-agent: anthropic-ai
Disallow: /
User-agent: ClaudeBot
Disallow: /
User-agent: Claude-User
Disallow: /
User-agent: Claude-SearchBot
Disallow: /
User-agent: claude-web
Disallow: /
User-agent: Applebot-Extended
Disallow: /
User-agent: Bytespider
Disallow: /
User-agent: TikTokSpider
Disallow: /
User-agent: cohere-ai
Disallow: /
User-agent: cohere-training-data-crawler
Disallow: /
User-agent: CCBot
Disallow: /
User-agent: DiffBot
Disallow: /
User-agent: DuckAssistBot
Disallow: /
User-agent: Google-Extended
Disallow: /
User-agent: PetalBot
Disallow: /
User-agent: PanguBot
Disallow: /
User-agent: meta-externalagent
Disallow: /
User-agent: Meta-ExternalFetcher
Disallow: /
User-agent: FacebookBot
Disallow: /
User-agent: MistralAI-User
Disallow: /
User-agent: ChatGPT-User
Disallow: /
User-agent: GPTBot
Disallow: /
User-agent: OAI-SearchBot
Disallow: /
User-agent: ChatGPT-User/2.0
Disallow: /
User-agent: PerplexityBot
Disallow: /
User-agent: Perplexity-User
Disallow: /
User-agent: omgili
Disallow: /
User-agent: omgilibot
Disallow: /
User-agent: Webzio-Extended
Disallow: /
User-agent: YouBot
Disallow: /
User-agent: Scrapy
Disallow: /

User-agent:  ICCrawler - iCjobs
Disallow: /

User-agent: *
Disallow: /tv/maus_online/
Disallow: /tv/neuneinhalb/
Disallow: /php/
Disallow: /rw/
Disallow: /themen/_config_/
Allow: /themen/_config_/script/20*
Disallow: /*/codebase/
Allow: /*/codebase/css/
Allow: /*/codebase/img/
Allow: /*/codebase/images/
Allow: /*/codebase/js/
Disallow: /*.nimex$
Disallow: /wdrde_specials/vpn/
Disallow:  /tv/wissenmachtah/
sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

B
TLS Certificate Expiry & Recommendations
140 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

140
days left
0d 30d 60d 90d+

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 Records
1 A records, 54 ms lookup
PASS
1 A records, 54 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 149.219.209.51
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: dnsext02.wdr.de, pdns02.domaincontrol.com, dnsext03.wdr.de
Info::
1 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: 54 ms
Got: 54 ms
A149.219.209.51
AAAA—
CNAME—
NSdnsext02.wdr.de, pdns02.domaincontrol.com, dnsext03.wdr.de
MX
3 wdr-de.mail.protection.outlook.com
TXT
flexera-domain-verification-zzzqniyqdcobmmrh
Ayb7OHsQiXsd92FVK4UvWBklPtek8x08BzVHIFktllcc5apSCOYLcOWksQ55wCGFTfWWrkSZn6HPS/zf...
google-site-verification=Vs4wVdkpyhpWQd52sbI34T04NAd9SoPhYbWZTBha-W0
google-site-verification=Meonnhtuh82M08vRrKfLQ-sPj2TseCoTPHBtUM5u6-o
miro-verification=0ae33878238a5d11c800cc4ec59dd046020db72f
adobe-idp-site-verification=84cd0799c9e9ee1badafd4059546d2383afc1e31259da1358964...
MS=D171151D57A6DFBB9CEE63A753B94B74CE8046A2
facebook-domain-verification=kn7jh9ukio3kuq69e0gqodx9c2xjog
google-site-verification=KtAswyqxLf6NhBm1oNLSkBXucye0F_qHbsHXyYv-VWg
MS=ms19058662
SPF v=spf1 mx ip4:149.219.198.58 ip4:149.219.198.59 ip4:149.219.195.55 ip4:149.219.1...
CAALookup not available with standard resolver
Resolved in 54 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
Redirect Chain
1 redirect(s), 166 ms total
PASS
1 redirect(s), 166 ms total
Info::
Single redirect
Got: https://wdr.de → https://www1.wdr.de/index.html (301)
Info::
Cross-domain redirect detected

https://wdr.de

126 ms · HTTP/1.1

301

https://www1.wdr.de/index.html

40 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://wdr.de301126 msHTTP/1.1Apache
2https://www1.wdr.de/index.html20040 msHTTP/1.1Apache

See the visual redirect chain in the HTTP Probe tab →

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)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.wdr.de/
200https://wdr.de/

Preferred variant: non-www

HTTP → HTTPS

301http://wdr.de/ → https://www1.wdr.de/index.html

Consistent

A+
Domain Intelligence
wdr.de — hosted on WDR-AS, DE
PASS
wdr.de — hosted on WDR-AS, 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: WDR-AS, DE
Got: AS8303
Domain expiry

Unknown

SSL certificate

140 days

Issued by Sectigo Limited

Domain age

Unknown

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

WDR-AS, DE

ASN AS8303

149.219.209.51

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 149.219.209.51
ASN AS8303 (WDR-AS, DE)
Provider WDR-AS, DE
Data source: whois (0.7s)

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 151 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
27 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
28 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
67 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
152 ms
Total Time Total request time from DNS lookup through full response.
152 ms

Connection waterfall

DNS Lookup 27 ms TCP Connect 28 ms TLS Handshake 67 ms Server Processing 29 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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