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https://swr.de

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
1
PASS
6
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
6 PASS 1 REVIEW 2 FIX
D
TLS Certificate Expiry & Recommendations
Action
13 days until leaf cert expires — 4 issues to address
FIX

Certificate validity

13
days left
0d 30d 60d 90d+
Renew urgently — under 14 days remaining

Recommended actions

  • Renew certificate — 13 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
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

A+
DNS Records
1 A records, 40 ms lookup
PASS
1 A records, 40 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 34.120.237.106
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: ns02.brandshelter.net, ns01.brandshelter.com
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: 40 ms
Got: 40 ms
A34.120.237.106
AAAA—
CNAME—
NSns02.brandshelter.net, ns01.brandshelter.com
MX
0 swr-de.mail.protection.outlook.com
TXT
google-site-verification=DcCgbIVyO-rFeBzleluzeqQj9QwiPzxp-Pk2y8_AbTI
flexera-domain-verification-pcskhgqmovcquxgz
SPF v=spf1 include:_spf.swr.de ~all
google-site-verification=DfeFfV_QDEvjXmvUZ1i5Hh2qbpHSg4PBDlG5ZQd0_SE
bitrise-verification=24ea5adcfa5d37cc-IoDQuUklHlAb
facebook-domain-verification=n6d0i343ktjegg2ohyp9496fjjsv6t
adobe-idp-site-verification=ef5834e3-9e81-4300-b462-18f63d3d5aed
Wgm54MhrLv3EWMoyHLWEuZYZY9lsCBz2RKxX22A0isFJoCeuOanQR9ghXhpstYCl2WsigHsh2AEgSpfQ...
google-site-verification=FHXvejlCadtpuVlZIJdYtdMyDxRzQjjsXnOTzFlQKOY
d365mktkey=sxyM650irRfseKaSxGamg9KcI9wx48vkezjuAtoc5gwx
apple-domain-verification=GgfFpP5li6zYrgWq
jamf-site-verification=CTw9wZEYLa0ucOzQpBCzOg
CAALookup not available with standard resolver
Resolved in 40 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), 230 ms total
PASS
1 redirect(s), 230 ms total
Info::
Single redirect
Got: https://swr.de → https://www.swr.de:443/ (301)
Info::
WWW normalization redirect

https://swr.de

61 ms · HTTP/1.1

301

https://www.swr.de:443/

169 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://swr.de30161 msHTTP/1.1
2https://www.swr.de:443/200169 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 3 URLs
PASS
robots.txt present, sitemap with 3 URLs
Info::
robots.txt is present
Got: 2036 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 3 entries
Info::
Sitemap index with 3 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 2036 B Sitemaps referenced 3 User-agents anthropic-ai, cohere-ai, meta-externalagent, GPTBot, Perplexity-User, YouBot, Amazonbot, cohere-training-data-crawler, DuckAssistBot, PerplexityBot, Google-Extended, FacebookBot, Webzio-Extended, *, PanguBot, ChatGPT-User, ChatGPT-User/2.0, omgilibot, Claude-SearchBot, Bytespider, Meta-ExternalFetcher, omgili, Claude-User, claude-web, TikTokSpider, Applebot-Extended, MistralAI-User, Scrapy, ClaudeBot, CCBot, DiffBot, PetalBot, OAI-SearchBot Blocking No — crawling allowed
# robots.txt für SWR.de
# Stand: 2024-02-08 10:15 CET
#

#
# Disallow
#

User-agent: *
Disallow: /api/
Disallow: /reactions/
Disallow: /search/suggest/
Disallow: /cms/
Disallow: /*~_currentSlide-*
Disallow: /*?_pjax=%23content
Disallow: /*?_pjax=%23fragment

#
# Nutzungsvorbehalt KI (siehe https://gitlab.ard.de/modul-12-seo/nutzungsvorbehalt/-/raw/master/robots.txt)
#
# Amazon
User-agent: Amazonbot
Disallow: /

# Anthropic
User-agent: anthropic-ai
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: Claude-User
Disallow: /

User-agent: Claude-SearchBot
Disallow: /

User-agent: claude-web
Disallow: /

# Apple
User-agent: Applebot-Extended
Disallow: /

# ByteDance
User-agent: Bytespider
Disallow: /

User-agent: TikTokSpider
Disallow: /

# Cohere
User-agent: cohere-ai
Disallow: /

User-agent: cohere-training-data-crawler
Disallow: /

# Common Crawl
User-agent: CCBot
Disallow: /

# Diffbot
User-agent: DiffBot
Disallow: /

# DuckDuckGo
User-agent: DuckAssistBot
Disallow: /

# Google
User-agent: Google-Extended
Disallow: /

# Huawei
User-agent: PetalBot
Disallow: /

User-agent: PanguBot
Disallow: /

# Meta
User-agent: meta-externalagent
Disallow: /

User-agent: Meta-ExternalFetcher
Disallow: /

User-agent: FacebookBot
Disallow: /

# Mistral
User-agent: MistralAI-User
Disallow: /

# OpenAI
User-agent: ChatGPT-User
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: OAI-SearchBot
Disallow: /

User-agent: ChatGPT-User/2.0
Disallow: /

# Perplexity
User-agent: PerplexityBot
Disallow: /

User-agent: Perplexity-User
Disallow: /

# Webz.io
User-agent: omgili
Disallow: /

User-agent: omgilibot
Disallow: /

User-agent: Webzio-Extended
Disallow: /

# You.com
User-agent: YouBot
Disallow: /

# Zyte
User-agent: Scrapy
Disallow: /

#
# Sitemaps
#

#Generische Google-Sitemap
Sitemap: https://www.swr.de/~sitemap/index.xml

#News-Sitemap für SWR Aktuell
Sitemap: https://www.swr.de/~sitemap/swraktuell/index.xml

#News-Sitemap für SWR Sport
Sitemap: https://www.swr.de/~sitemap/sport/index.xml

Host: www.swr.de
sitemap.xml 200 OK
Type Sitemap Index URLs 3 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::
HTTP correctly 301-redirects to HTTPS

www / non-www

403https://www.swr.de/
200https://swr.de/

HTTP → HTTPS

301http://swr.de/ → https://www.swr.de:443/

Consistent

A+
Domain Intelligence
swr.de — hosted on Google Cloud
PASS
swr.de — hosted on Google Cloud
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: Google Cloud
Got: AS396982
Domain expiry

Unknown

SSL certificate

13 days

Issued by Google Trust Services

Domain age

Unknown

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Google Cloud

ASN AS396982

34.120.237.106

Registrar

Registrar unknown

Unlocked Name servers unknown
Expiry timeline
Today
+1 year
SSL expiry Danger zone (≤30 days)
Recommended actions
  • Renew the TLS certificate or verify auto-renewal is working
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar
Hosting
IP Address 34.120.237.106
ASN AS396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US)
Provider Google Cloud
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 87 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
34 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
17 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
20 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
88 ms
Total Time Total request time from DNS lookup through full response.
88 ms

Connection waterfall

DNS Lookup 34 ms TCP Connect 17 ms TLS Handshake 20 ms Server Processing 17 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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