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https://nhm.ac.uk

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
91
GRADE
A
FIX
0
REVIEW
3
PASS
6
INFO
0
Probed from Sao Paulo, Brazil
301 Moved Permanently
Checks
9
6 PASS 3 REVIEW
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.nhm.ac.uk/
200https://nhm.ac.uk/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://nhm.ac.uk/ https://nhm.ac.uk/

Consistent

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

Certificate validity

39
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
B
CDN & Delivery
Cloudflare
REVIEW
Cloudflare
Info::
Site is served via Cloudflare CDN (edge: GRU)
Got: cf-ray: 9effe3f71b42dfda-GRU
CDN Detected: Cloudflare
Provider Cloudflare Evidence cf-ray: 9effe3f71b42dfda-GRU
A
DNS Records
2 A records, 682 ms lookup
PASS
2 A records, 682 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.18.16.116, 104.18.17.116
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700::6812:1174, 2606:4700::6812:1074
Info::
2 nameserver(s) configured
Got: brit.ns.cloudflare.com, javier.ns.cloudflare.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
Warning::
DNS resolution is slow (682 ms)
Slow DNS adds latency to every page load. Consider a faster DNS provider.
Got: 682 ms
A104.18.16.116, 104.18.17.116
AAAA2606:4700::6812:1174, 2606:4700::6812:1074
CNAME
NSbrit.ns.cloudflare.com, javier.ns.cloudflare.com
MX
1 nhm-ac-uk.mail.protection.outlook.com
TXT
3YJT79G9921Q8PUFJYYXQJG2EZ8NE9GEK5SHFPWZ
9OI6U51P2JGSuHzztIjOAdGQy6DFohF5KWBF/dmiNSzxOayELRpOZZMKBre8zuGsI4L3FaJcR39Wxdtm...
I7LCNPEQLKON50D9GSOX6TQNHCDCYH97EN0FYVN6G
access-domain-verification=de7d38516888281ef01a4b593824de82d240a6c4df313d7dca135...
adobe-idp-site-verification=890a6b3b-31ea-4a2b-99ef-3734e507e434
apple-domain-verification=bIQWWKs6qKUMDm4G
atlassian-domain-verification=QajJuZTu3QKwvgah0TOSjp31prgJadCd06k8lqO2FslfvlyacL...
atlassian-domain-verification=aOWBheOvGJqLLZhi7zWbvfnpuD22JnaxSUo64KmLi2HvkBYdhu...
facebook-domain-verification=fknil96xj84d9dv825bq0362h37qha
facebook-domain-verification=tprgf6tig7xixy9cr584h6y7x19xoz
facebook-domain-verification=upch06yvgis4m94ze1t5hk1d2zrxi5
miro-verification=84ded6fc1f33f0ccd9df1a4cab67cf8009aec7f2
onetrust-domain-verification=59f0abf4ca68410cbb912def3efce5b6
SPF v=spf1 include:_spf1.nhm.ac.uk include:spf.protection.outlook.com ~all
CAALookup not available with standard resolver
Resolved in 682 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.

Slow DNS adds latency to every page load. Consider a faster DNS provider.

Why this matters

DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.

Source: DNS performance benchmarks

A
Redirect Chain
1 redirect(s), 57 ms total
PASS
1 redirect(s), 57 ms total
Info::
Single redirect
Got: https://nhm.ac.uk → https://www.nhm.ac.uk/ (301)
Info::
WWW normalization redirect

https://nhm.ac.uk

16 ms · HTTP/1.1

301

https://www.nhm.ac.uk/

41 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://nhm.ac.uk30116 msHTTP/1.1cloudflare
2https://www.nhm.ac.uk/20041 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (2 ms)
PASS
IPv6 reachable (2 ms)
Info::
IPv6 is configured and reachable at 2606:4700::6812:1174, 2606:4700::6812:1074
Got: 2 ms connect
IPv6 Ready
AAAA Records 2606:4700::6812:1174, 2606:4700::6812:1074 Connection Reachable (2 ms)
A+
Crawlability
robots.txt present, sitemap with 3325 URLs
PASS
robots.txt present, sitemap with 3325 URLs
Info::
robots.txt is present
Got: 1738 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 3325 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 1738 B Sitemaps referenced 0 User-agents *, Bytespider, CCBot, CloudflareBrowserRenderingCrawler, meta-externalagent, Amazonbot, Applebot-Extended, ClaudeBot, Google-Extended, GPTBot 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.

# BEGIN Cloudflare Managed content

User-agent: *
Content-Signal: search=yes,ai-train=no
Allow: /

User-agent: Amazonbot
Disallow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: CloudflareBrowserRenderingCrawler
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: meta-externalagent
Disallow: /

# END Cloudflare Managed Content


A+
Domain Intelligence
nhm.ac.uk — via No registrar listed. This domain is directly registered with Nominet.
PASS
nhm.ac.uk — via No registrar listed. This domain is directly registered with Nominet.
Info::
Registrar: No registrar listed. This domain is directly registered with Nominet.
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.
Domain expiry

Unknown

SSL certificate

39 days

Issued by Google Trust Services

Domain age

Unknown

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Unknown

2606:4700::6812:1074

Registrar

No registrar listed. This domain is directly registered with Nominet.

Unlocked 7 NS records
Expiry timeline
Today
+1 year
SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar No registrar listed. This domain is directly registered with Nominet.
Name Servers ns0.ja.net, ns2.ja.net, ns3.ja.net, ns4.ja.net, auth03.ns.uu.net, ns1.surfnet.nl, dns-3.dfn.de
Registrant The JNT Association
Hosting
IP Address 2606:4700::6812:1074
Data source: whois (2.2s)

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 17 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
6 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.
8 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
17 ms
Total Time Total request time from DNS lookup through full response.
17 ms

Connection waterfall

DNS Lookup 6 ms TCP Connect 1 ms TLS Handshake 8 ms Server Processing 3 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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