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
CCrawlabilityActionrobots.txt present, sitemap with 0 URLsREVIEW
Search engines may not be able to parse the sitemap. Fix XML validation errors.
An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.
Learn more ▾ ▴
Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.
Source: sitemaps.org / Google Search Central
An empty sitemap provides no value. Add <url> entries for your pages.
An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.
Learn more ▾ ▴
Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.
Source: Google Search Central / sitemaps.org
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
# Robots.txt for sueddeutsche.de
# www.robotstxt.org/
# www.google.com/support/webmasters/bin/answer.py?hl=en&answer=156449
# Exclude all other stuff for CRE tracking
User-agent: *
Disallow: /uss
Disallow: /v1/subscriptioninfo
Disallow: /cdn_sz_mob/live/iqadcontroller.js.gz
Disallow: /cdn_sz/live/iqadcontroller.js.gz
Disallow: /cre-1.0/tracking/*.js$
Disallow: /text-to-speech/
Disallow: /pay/piano/
Disallow: /advertorial/*/files/media/*.svg
# Exclude SEO-Tools & SPAM-Bots
User-agent: backlink-check.de
Disallow: /
User-agent: BacklinkCrawler
Disallow: /
User-agent: ExtractorPro
Disallow: /
User-agent: Fasterfox
Disallow: /
User-agent: LinkextractorPro
Disallow: /
User-agent: LinkWalker
Disallow: /
User-agent: MJ12bot
Disallow: /
User-agent: Openbot
Disallow: /
User-agent: rogerbot
Disallow: /
User-agent: searchpreview
Disallow: /
User-agent: SemrushBot
Disallow: /
User-agent: SEODAT
Disallow: /
User-agent: SEOENGBot
Disallow: /
User-agent: SEOkicks-Robot
Disallow: /
User-agent: True_Robot
Disallow: /
User-agent: URL Control
Disallow: /
User-agent: URL_Spider_Pro
Disallow: /
User-agent: xovi
Disallow: /
User-agent: GPTBot
Disallow: /
# Uber Metrics
User-agent: um-IC
Disallow: /
# Googles generative AI crawlers
User-agent: Google-Extended
Disallow: /
User-agent: ClaudeBot
Disallow: /
User-agent: Claude-Web
Disallow: /
User-agent: AhrefsBot
Disallow: /
User-agent: ImagesiftBot
Disallow: /
User-agent: GumGum Bot
Disallow: /
User-agent: anthropic-ai
Disallow: /
User-agent: ChatGPT-User
Disallow: /
User-agent: cohere-ai
Disallow: /
User-agent: PerplexityBot
Disallow: /
User-agent: Amazonbot
Disallow: /20*
User-agent: AmazonAdBot
Disallow: /uss
Disallow: /v1/subscriptioninfo
Disallow: /cdn_sz_mob/live/iqadcontroller.js.gz
Disallow: /cdn_sz/live/iqadcontroller.js.gz
Disallow: /cre-1.0/tracking/*.js$
Disallow: /text-to-speech/
Disallow: /pay/piano/
Disallow: /advertorial/*/files/media/*.svg
Allow: /
# Legal notice: SZ.de expressly reserves the right to use its content for commercial text and data mining (§ 44 b UrhG).
# The use of robots or other automated means to access SZ.de or collect or mine data without
# the express permission of SZ.de is strictly prohibited.
# SZ.de may, in its discretion, permit certain automated access to certain SZ.de pages,
# If you would like to apply for permission to crawl SZ.de, collect or use data, please email syndication@sz.de
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
CTLS Certificate Expiry & RecommendationsAction27 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
Recommended actions
- Renew certificate — 27 days remaining
- 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 Records1 A records, 55 ms lookupPASS
| A | 208.82.73.61 |
| AAAA | — |
| CNAME | — |
| NS | ns3.boreus.de, ns2.boreus.de, ns1.boreus.de, ns4.boreus.de |
| MX | 50 sueddeutsche-de.mail.protection.outlook.com |
| TXT | facebook-domain-verification=ab8co2vgrr4c3po5tckkjs0qfis8g2 google-site-verification=sJEL0jG1Thi6O9-unLrmaEIEC8BomjrIF78fHRaMD78 d365mktkey=SORqbisCsUoqFHWz3BAD3yci5TAfIxng6bC6sO3VRCQx google-site-verification=HB8JPVCCF211b6rNksuDymt6Z1EwxlpCZpy69K7NhLA google-site-verification=pBswW-B5XnVYk61RjwMKZu8NAz0zc40G4BD4c7v3N_0 google-site-verification=NqTbwa55qU5RFjYQ6-iBrzjN1IT5ORHKut_fPLzqksc pinterest-site-verification=b1d07279b90711bcb35adc3a2ba7614f google-site-verification=COiGbnnH-cZFH-Oj32APETlFBysYgsRxb9R58TIufdw SPF v=spf1 a mx include:spf.qb-feedback.com include:sz.de ip4:5.75.167.180/32 ip4:80... atlassian-domain-verification=LmhbOFlPaFZGD6QBkVhcQgaAZnNJpu6TSN/ooZ4Uz4oSRysmVi... google-site-verification=BIi0vJ5b5ZY8WLfmTnPMNSc4a_57gkBhuiRU72bo-aQ MS=ms99755032 adobe-idp-site-verification=29adaf8d3939a68728ebb9b361e3e14660d5020afead69dc3fb2... Br206Oi5bQ1AV3DyHZc0RxjHOAMPqrzWsOvMB2/XhIgqImnXzYDImkHNIfqspasf81Kbf39nu2V58vJI... |
| 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.
ARedirect Chain1 redirect(s), 236 ms totalPASS
https://sueddeutsche.de
122 ms · HTTP/1.1
https://www.sueddeutsche.de/
114 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://sueddeutsche.de | 301 | 122 ms | HTTP/1.1 | nginx |
| 2 | https://www.sueddeutsche.de/ | 200 | 114 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+Domain Intelligencesueddeutsche.de — hosted on BOREUS, DEPASS
Unknown
27 days
Issued by DigiCert Inc
Unknown
Status unknown
Protects against DNS spoofing
BOREUS, DE
ASN AS205411
208.82.73.61
Registrar unknown
Expiry timeline
Recommended actions
- Renew the TLS certificate or verify auto-renewal is working
- 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