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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
81
GRADE
B
FIX
1
REVIEW
2
PASS
6
INFO
0
Probed from Santa Clara, United Stated
200 OK
Checks
9
6 PASS 2 REVIEW 1 FIX
F
IPv6 Readiness
Action
IPv6 records exist but unreachable
FIX
IPv6 records exist but unreachable
Warning::
IPv6 DNS records exist but server is not reachable
Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.
Got: 2606:4700:3034::6815:5f88, 2606:4700:3030::ac43:90fe
Info::
IPv6 connection error
Got: dial tcp6 [2606:4700:3034::6815:5f88]:443: connect: network is unreachable
IPv6 Misconfigured
AAAA Records 2606:4700:3034::6815:5f88, 2606:4700:3030::ac43:90fe Connection UNREACHABLE

Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.

Why this matters

Advertising IPv6 (AAAA records) without a reachable server means IPv6-preferring clients silently fail every connection.

Learn more

Modern browsers prefer IPv6 if AAAA exists (Happy Eyeballs algorithm). If the IPv6 server isn't reachable, browsers fall back to IPv4 — but with seconds of added latency per request. Either fix IPv6 reachability or remove the AAAA records.

Source: RFC 8305 (Happy Eyeballs)

B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.docusaurus.io/
200https://docusaurus.io/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://docusaurus.io/ https://docusaurus.io/

Consistent

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

Certificate validity

64
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
2 A records, 19 ms lookup
PASS
2 A records, 19 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.21.95.136, 172.67.144.254
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:3034::6815:5f88, 2606:4700:3030::ac43:90fe
Info::
2 nameserver(s) configured
Got: edna.ns.cloudflare.com, norm.ns.cloudflare.com
Info::
No MX records — email not configured via DNS
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: 19 ms
Got: 19 ms
A104.21.95.136, 172.67.144.254
AAAA2606:4700:3034::6815:5f88, 2606:4700:3030::ac43:90fe
CNAME
NSedna.ns.cloudflare.com, norm.ns.cloudflare.com
MX
TXT
ahrefs-site-verification_685712002509dcaeb9c00b2e1661547b4062e9893a211a9e6b0ea02...
google-site-verification=-AcN9UbD425riRwK5JRKmgA5siF5ZZ9LufZosCNau0k
SPF v=spf1 a -all
CAALookup not available with standard resolver
Resolved in 19 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://docusaurus.io

https://docusaurus.io

48 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://docusaurus.io20048 msHTTP/1.1cloudflare
A+
Crawlability
robots.txt present, sitemap with 1267 URLs
PASS
robots.txt present, sitemap with 1267 URLs
Info::
robots.txt is present
Got: 1248 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 1267 entries
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

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 1248 B Sitemaps referenced 0 User-agents Blocking No — crawling allowed
# As a condition of accessing this website, you agree to abide by the following
# content signals:

# (a)  If a content-signal = yes, you may collect content for the corresponding
#      use.
# (b)  If a content-signal = no, you may not collect content for the
#      corresponding use.
# (c)  If the website operator does not include a content signal for a
#      corresponding use, the website operator neither grants nor restricts
#      permission via content signal with respect to the corresponding use.

# The content signals and their meanings are:

# search:   building a search index and providing search results (e.g., returning
#           hyperlinks and short excerpts from your website's contents). Search does not
#           include providing AI-generated search summaries.
# ai-input: inputting content into one or more AI models (e.g., retrieval
#           augmented generation, grounding, or other real-time taking of content for
#           generative AI search answers).
# ai-train: training or fine-tuning AI models.

# ANY RESTRICTIONS EXPRESSED VIA CONTENT SIGNALS ARE EXPRESS RESERVATIONS OF
# RIGHTS UNDER ARTICLE 4 OF THE EUROPEAN UNION DIRECTIVE 2019/790 ON COPYRIGHT
# AND RELATED RIGHTS IN THE DIGITAL SINGLE MARKET.

A
Domain Intelligence
docusaurus.io — via RegistrarSEC LLC, 8 years, 10 months old, hosted on Cloudflare
PASS
docusaurus.io — via RegistrarSEC LLC, 8 years, 10 months old, hosted on Cloudflare
Warning::
Domain expires in 85 days
Consider enabling auto-renewal to prevent accidental expiration.
Got: Expires Jun 28, 2026
Info::
Registrar: RegistrarSEC LLC
Info::
Hosting: Cloudflare
Got: AS13335
Domain expiry

13 days

June 28, 2026

SSL certificate

64 days

Issued by Google Trust Services

Domain age

8 years, 10 months

Registered June 28, 2017

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS13335

172.67.144.254

Registrar

RegistrarSEC LLC

Lock status unknown 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Renew the domain or enable auto-renewal to prevent accidental expiry
Registrar RegistrarSEC LLC
Created June 28, 2017 (8 years, 10 months ago)
Expires June 28, 2026 (2 months)
Last Updated June 20, 2023
Name Servers norm.ns.cloudflare.com, edna.ns.cloudflare.com
Registrant Meta Platforms, Inc.
Hosting
IP Address 172.67.144.254
ASN AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
Provider Cloudflare
Data source: whois (0.7s)

Consider enabling auto-renewal to prevent accidental expiration.

Why this matters

Domain expiry approaching — renew immediately and ensure auto-renew + alerting are configured.

Source: ICANN renewal policy

A+
HTTP Probe Timing
Total 52 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
10 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
4 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
9 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
52 ms
Total Time Total request time from DNS lookup through full response.
53 ms

Connection waterfall

DNS Lookup 10 ms TCP Connect 4 ms TLS Handshake 9 ms Server Processing 29 ms Content Transfer 0 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: SJC)
Got: cf-ray: 9e725aa08f05effe-SJC
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9e725aa08f05effe-SJC
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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