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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
95
GRADE
A
FIX
0
REVIEW
2
PASS
6
INFO
1
Probed from Amsterdam, Netherlands
200 OK
Checks
9
6 PASS 2 REVIEW
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
34 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

34
days left
0d 30d 60d 90d+

Recommended actions

  • Submit your domain to hstspreload.org to be added to the Chrome preload list
  • 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
4 A records, 159 ms lookup
PASS
4 A records, 159 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 151.101.1.91, 151.101.65.91, 151.101.129.91, 151.101.193.91
Info::
Has 8 IPv6 (AAAA) record(s)
Got: 2a04:4e42:600::347, 2a04:4e42:c00::347, 2a04:4e42:800::347, 2a04:4e42:a00::347, 2a04:4e42:200::347, 2a04:4e42:400::347, 2a04:4e42::347, 2a04:4e42:e00::347
Info::
4 nameserver(s) configured
Got: ns1.exoscale.ch, ns1.exoscale.com, ns1.exoscale.io, ns1.exoscale.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: 159 ms
Got: 159 ms
A151.101.1.91, 151.101.65.91, 151.101.129.91, 151.101.193.91
AAAA2a04:4e42:600::347, 2a04:4e42:c00::347, 2a04:4e42:800::347, 2a04:4e42:a00::347, 2a04:4e42:200::347, 2a04:4e42:400::347, 2a04:4e42::347, 2a04:4e42:e00::347
CNAME—
NSns1.exoscale.ch, ns1.exoscale.com, ns1.exoscale.io, ns1.exoscale.net
MX
1 smtp.google.com
TXT
google-site-verification=HireWwzGlFDP1DwVu9QWZPc32E2T6ABj2SG_S17n5tQ
google-site-verification=ZdmUdPkn5AACdTIaHKg-x5DL9Z0UEeQMt6QXplRQq8U
have-i-been-pwned-verification=dweb_n410bsmsvupii63ib5jghysh
SPF v=spf1 include:_spf.google.com include:helpscoutemail.com ~all
CAALookup not available with standard resolver
Resolved in 159 ms

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
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://joinmastodon.org

https://joinmastodon.org

9 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://joinmastodon.org2009 msHTTP/1.1
A+
IPv6 Readiness
IPv6 reachable (1 ms)
PASS
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2a04:4e42:600::347, 2a04:4e42:c00::347, 2a04:4e42:800::347, 2a04:4e42:a00::347, 2a04:4e42:200::347, 2a04:4e42:400::347, 2a04:4e42::347, 2a04:4e42:e00::347
Got: 1 ms connect
IPv6 Ready
AAAA Records 2a04:4e42:600::347, 2a04:4e42:c00::347, 2a04:4e42:800::347, 2a04:4e42:a00::347, 2a04:4e42:200::347, 2a04:4e42:400::347, 2a04:4e42::347, 2a04:4e42:e00::347 Connection Reachable (1 ms)
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

308https://www.joinmastodon.org/
200https://joinmastodon.org/

HTTP → HTTPS

301http://joinmastodon.org/ → https://joinmastodon.org/

Consistent

A+
HTTP Probe Timing
Total 12 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
3 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
1 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
5 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
12 ms
Total Time Total request time from DNS lookup through full response.
13 ms

Connection waterfall

DNS Lookup 3 ms TCP Connect 1 ms TLS Handshake 5 ms Server Processing 3 ms Content Transfer 1 ms
A+
CDN & Delivery
Fastly (HIT, HIT)
PASS
Fastly (HIT, HIT)
Info::
Site is served via Fastly CDN
Got: x-served-by: cache-fra-eddf8230126-FRA, cache-rtm-ehrd2290024-RTM
Info::
CDN cache status: HIT, HIT
CDN Detected: Fastly
Provider Fastly Cache Status HIT, HIT Evidence x-served-by: cache-fra-eddf8230126-FRA, cache-rtm-ehrd2290024-RTM
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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