Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
BRedirect Chain1 redirect(s), 1189 ms totalREVIEW
https://st-andrews.ac.uk
594 ms · HTTP/1.1
https://www.st-andrews.ac.uk/
595 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://st-andrews.ac.uk | 302 | 594 ms | HTTP/1.1 | |
| 2 | https://www.st-andrews.ac.uk/ | 200 | 595 ms | HTTP/1.1 | Apache/2.4.66 (Debian) |
See the visual redirect chain in the HTTP Probe tab →
If permanent, use 301 instead.
302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.
Learn more ▾ ▴
Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).
Source: Google Search Central
CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations60 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
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 Records1 A records, 154 ms lookupPASS
| A | 138.251.7.84 |
| AAAA | — |
| CNAME | — |
| NS | ns1.st-and.ac.uk, ns3.st-and.ac.uk, ns4.ja.net, ns4.st-and.ac.uk, ns2.st-and.ac.uk |
| MX | 5 mx04.st-andrews.ac.uk 5 mx05.st-andrews.ac.uk 5 mx02.st-andrews.ac.uk 5 mx03.st-andrews.ac.uk 5 mx01.st-andrews.ac.uk |
| TXT | adobe-idp-site-verification=c859c3b70420f0fa3c2c0891a4101110fc16c2ee7bb9a0773da6... gBM5O36SmWsxHRRlgoa29ElwLv+Dr9wkRCThCcPHA9CrwMVsmlW/Db35xAMSdoNQB+Obfy1L3ylOZYMS... google-site-verification=d3JjGXl44LCRvuWJ1iBzbLHurZEZNso0Kl5Wc0i0zTM atlassian-domain-verification=c7XXDXRJvxvtdwyDO4BIskEDg5RS6tK2v3ZU2K09EqJr02HJtk... SPF v=spf1 ip4:138.251.6.248 ip4:138.251.6.249 ip4:138.251.6.241 ip4:138.251.6.250 i... |
| CAA | Lookup not available with standard resolver |
Multiple A records provide failover if one server goes down.
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.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
A+Crawlabilityrobots.txt present, sitemap with 10350 URLsPASS
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
User-agent: *
Crawl-delay: 10
Disallow: /jira/
Disallow: /~www_pa/
Disallow: /~psst/
Disallow: /subjects/archive/
Disallow: /schoolpeoplepublic/*
Disallow: /*?*skin=0
Disallow: /subjects/modules/search/
Disallow: /subjects/modules/advisers-search/
Disallow: /subjects/reqs/
Disallow: /subjects/specs/
Disallow: /philevents/
Disallow: /php/
Disallow: /s/
Disallow: /s1/
Disallow: /search/
Disallow: /collections/
Disallow: /photo-gallery/
Disallow: /guides/index.php
Disallow: /guides/index.html
Disallow: /~awm2/
User-agent: PetalBot
Disallow: /
User-agent: SemrushBot
Disallow: /
User-agent: HTTrack
A+Domain Intelligencest-andrews.ac.uk — via No registrar listed. This domain is directly registered with Nominet., hosted on JANET Jisc Services Limited, GBPASS
Unknown
60 days
Issued by Let's Encrypt
Unknown
Status unknown
Protects against DNS spoofing
JANET Jisc Services Limited, GB
ASN AS786
138.251.7.84
No registrar listed. This domain is directly registered with Nominet.
Expiry timeline
Recommended actions
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
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.
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