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https://sbb.ch

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
84
GRADE
B
FIX
1
REVIEW
3
PASS
4
INFO
1
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
4 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
no robots.txt, no sitemap
REVIEW
no robots.txt, no sitemap
Info::
No robots.txt found
robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.

robots.txt is optional but recommended. It tells search engine crawlers which pages to index.

Why this matters

No robots.txt — crawlers fetch /robots.txt and get 404; not breaking but means default crawl behavior with no directives or sitemap reference.

Learn more ▾

A minimal robots.txt with `User-agent: * / Allow: / / Sitemap: https://example.com/sitemap.xml` covers the basics. Without it, crawlers behave fine but lose the sitemap signal and can't be selectively blocked from crawl-traps.

Source: robotstxt.org

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

robots.txt No robots.txt found

No robots.txt found

This is fine for most sites — a missing robots.txt allows all crawling by default.

sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

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

Certificate validity

89
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, 177 ms lookup
PASS
1 A records, 177 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 194.150.245.142
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
5 nameserver(s) configured
Got: ns-73.awsdns-09.com, ns-1739.awsdns-25.co.uk, ns-1254.awsdns-28.org, ns.sbb.ch, ns-967.awsdns-56.net
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: 177 ms
Got: 177 ms
A194.150.245.142
AAAA—
CNAME—
NSns-73.awsdns-09.com, ns-1739.awsdns-25.co.uk, ns-1254.awsdns-28.org, ns.sbb.ch, ns-967.awsdns-56.net
MX
10 sbb-ch.mail.protection.outlook.com
TXT
apple-domain-verification=SCevAjT9ULPdpBd6
onetrust-domain-verification=42359ab1e53844569d3be24b5bdb6e26
onetrust-domain-verification=de841a4e9aa7475db07070abd7f150e0
google-site-verification=LhD8D1NbAAJeTe6OCIdbRsCVjzvX7_aHWA4dZu-wG8Q
MS=ms34590370
teamviewer-sso-verification=f90e9b40e6294735b0859dd9d92c2f21
SPF v=spf1 include:spf2.sbb.ch a:c.spf.service-now.com include:spf.protection.outloo...
swisssign-check=y_pFDmj2KTQJEMNfjE0OoEduQac
QuoVadis=50b3a2e3-237b-4998-b8a6-768d3727d629
VGdGi+G18rN9Uk0dsu65WCcK93yj1ikWw29cR6OkIZr81rt3Jfp3V/XngBczobZVA2qE5267qqJ9ot1N...
google-site-verification=KbfSC6HVZgVJSHudRBtIYhU2kQOKfyQLOQ4YfnKioLg
2D1536FF-63A4-4053-A747-EE28FD7E0233
unity-sso-verification=1922f040-a3d0-4531-b647-28dc61f1c50d
successfactors-site-verification=ZjkwMjNjZGIwMGM3NzZhNmYyYmI3ZGIyMzQ3YmNmMzE4OGI...
google-site-verification=O0wirgako3GN7C49TXaPBhsa7S5Sf7Y584GPGDB7Q2U
onetrust-domain-verification=9b90e2207ce444aaa6dbb0546c834206
QuoVadis=437d307c-34b6-4fb4-9228-8c4688b797bb
google-site-verification=UspM2v7ffR7H82oWLaAhVDeOLA-2jZmEsVcpZhofQ-Y
atlassian-domain-verification=eJF8QwwPrfZaX1DvzttHQjbR2vzNuRY9XWPRB4jAKfI0efc4hD...
asuid.qr.sbb.ch=373EB956F7203F05FA34B27B23539812AA5DAE1F6407C503EC3738BCD0C96172
apple-domain-verification=Mce6UhzoK1KY3hkUUz0DcGotILkVJOWTmE5ZPYVBxUc
facebook-domain-verification=b9o1v6a9ydhcnnw2rutndevdkw7viw
mongodb-site-verification=aw4d1AMA1nqRkc5guT3QNeVgVuzue5DG
paloaltonetworks-site-verification=de960013288dc91a90f4fdc713da6614ba3f2261dfad1...
miro-verification=8ea5e249de3b096034c8b76496024947d8c29918
CAALookup not available with standard resolver
Resolved in 177 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), 205 ms total
PASS
1 redirect(s), 205 ms total
Info::
Single redirect
Got: https://sbb.ch → https://www.sbb.ch/de/ (301)
Info::
WWW normalization redirect

https://sbb.ch

92 ms · HTTP/1.1

301

https://www.sbb.ch/de/

113 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://sbb.ch30192 msHTTP/1.1Apache
2https://www.sbb.ch/de/202113 msHTTP/1.1CloudFront

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::
HTTP correctly 301-redirects to HTTPS

www / non-www

202https://www.sbb.ch/
200https://sbb.ch/

HTTP → HTTPS

301http://sbb.ch/ → https://sbb.ch/

Consistent

A+
HTTP Probe Timing
Total 149 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
47 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.
31 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
149 ms
Total Time Total request time from DNS lookup through full response.
149 ms

Connection waterfall

DNS Lookup 47 ms TCP Connect 28 ms TLS Handshake 31 ms Server Processing 43 ms Content Transfer 0 ms
Domain Intelligence
Domain intelligence data not available
INFO
Domain intelligence data not available

RDAP and WHOIS lookup both failed

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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