Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DURL VariantsActionwww/non-www, trailing slash, HTTP→HTTPSFIX
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
HTTP version does not redirect to HTTPS
DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
BRedirect Chain1 redirect(s), 1985 ms totalREVIEW
https://sussex.ac.uk
1225 ms · HTTP/1.1
https://www.sussex.ac.uk/
760 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://sussex.ac.uk | 301 | 1225 ms | HTTP/1.1 | Apache |
| 2 | https://www.sussex.ac.uk/ | 200 | 760 ms | HTTP/1.1 | Apache |
See the visual redirect chain in the HTTP Probe tab →
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
BCrawlabilityrobots.txt present, no sitemapREVIEW
A sitemap helps search engines discover and index your pages more efficiently.
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
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: *
Disallow: /annualcoursereview/
Disallow: /barlow/search.php
Disallow: /bin/
Disallow: /cgi-bin/
Disallow: /developmentandalumni/
Disallow: /its/internal/
Disallow: /its/newsletter/archive/
Disallow: /library/electronic/redirect.php
Disallow: /library/includes/
Disallow: /library/intranet/web/
Disallow: /library/speccoll/cgjs/archive/
Disallow: /manual/
Disallow: /oldgooglestuff/
Disallow: /periodicreview/
Disallow: /sapp/booking/
Disallow: /search/
Disallow: /study/discover/
Disallow: /study/visitus/applicantvisitdays/
Disallow: /study/visitus/applicantvisitdaysonline/
Disallow: /study2/
Disallow: /Units/physics/
Disallow: /Units/russian/
Disallow: /Units/socpsy/
Disallow: /Units/spru/events/ocs/
Disallow: /Units/sso/roompics/
Disallow: /us/
Disallow: /utils/
Disallow: /wcm/
Disallow: /webteam/gateway/form.php
Disallow: /bmec/internal/departments/bam/modules/
Disallow: /bmec/internal/departments/bam/pgcourses/
Disallow: /bmec/internal/departments/bam/ugcourses/
Disallow: /bmec/internal/departments/economics/modules/
Disallow: /bmec/internal/departments/economics/pgcourses/
Disallow: /bmec/internal/departments/economics/ugcourses/
Disallow: /bmec/internal/departments/spru/modules/
Disallow: /bmec/internal/departments/spru/pgcourses/
Disallow: /ei/internal/coursesandmodules/engineeringdesign/modules/
Disallow: /ei/internal/coursesandmodules/engineeringdesign/pgcourses/
Disallow: /ei/internal/coursesandmodules/engineeringdesign/ugcourses/
Disallow: /ei/internal/coursesandmodules/informatics/modules/
Disallow: /ei/internal/coursesandmodules/informatics/pgcourses/
Disallow: /ei/internal/coursesandmodules/informatics/ugcourses/
Disallow: /english/internal/coursesandmodules/
Disallow: /esw/internal/departments/education/modules/
Disallow: /esw/internal/departments/education/pgcourses/
Disallow: /esw/internal/departments/education/ugcourses/
Disallow: /esw/internal/departments/socialwork/modules/
Disallow: /esw/internal/departments/socialwork/pgcourses/
Disallow: /esw/internal/departments/socialwork/ugcourses/
Disallow: /global/internal/departments/anthropology/modules/
Disallow: /global/internal/departments/anthropology/pgcourses/
Disallow: /global/internal/departments/anthropology/ugcourses/
Disallow: /global/internal/departments/development/modules/
Disallow: /global/internal/departments/development/pgcourses/
Disallow: /global/internal/departments/development/ugcourses/
Disallow: /global/internal/departments/geography/modules/
Disallow: /global/internal/departments/geography/pgcourses/
Disallow: /global/internal/departments/geography/ugcourses/
Disallow: /global/internal/departments/ir/modules/
Disallow: /global/internal/departments/ir/pgcourses/
Disallow: /global/internal/departments/ir/ugcourses/
Disallow: /hahp/internal/americanstudies/modules/
Disallow: /hahp/internal/americanstudies/pgcourses/
Disallow: /hahp/internal/americanstudies/ugcourses/
Disallow: /hahp/internal/arthistory/modules/
Disallow: /hahp/internal/arthistory/pgcourses/
Disallow: /hahp/internal/arthistory/ugcourses/
Disallow: /hahp/internal/history/modules/
Disallow: /hahp/internal/history/pgcourses/
Disallow: /hahp/internal/history/ugcourses/
Disallow: /hahp/internal/philosophy/modules/
Disallow: /hahp/internal/philosophy/pgcourses/
Disallow: /hahp/internal/philosophy/ugcourses/
Disallow: /iss/modules/directory/
Disallow: /iss/modules/subjects/
Disallow: /lifesci/internal/courses/modules/
Disallow: /lifesci/internal/courses/pgcourses/
Disallow: /lifesci/internal/courses/ugcourses/
Disallow: /lps/internal/departments/law/modules/
Disallow: /lps/internal/departments/law/pgcourses/
Disallow: /lps/internal/departments/law/ugcourses/
Disallow: /lps/internal/departments/politics/modules/
Disallow: /lps/internal/departments/politics/pgcourses/
Disallow: /lps/internal/departments/politics/ugcourses/
Disallow: /lps/internal/departments/sociology/modules/
Disallow: /lps/internal/departments/sociology/pgcourses/
Disallow: /lps/internal/departments/sociology/ugcourses/
Disallow: /mfm/internal/subjects/mediafilm/modules/
Disallow: /mfm/internal/subjects/mediafilm/pgcourses/
Disallow: /mfm/internal/subjects/mediafilm/ugcourses/
Disallow: /mfm/internal/subjects/music/modules/
Disallow: /mfm/internal/subjects/music/pgcourses/
Disallow: /mfm/internal/subjects/music/ugcourses/
Disallow: /mfm/internal/subjects/ugcourses/
Disallow: /mps/internal/departments/mathematics/modules/
Disallow: /mps/internal/departments/mathematics/pg/pgcourses/
Disallow: /mps/internal/departments/mathematics/ug/ugcourses/
Disallow: /mps/internal/departments/physicsandastronomy/modules/
Disallow: /mps/internal/departments/physicsandastronomy/pg/pgcourses/
Disallow: /mps/internal/departments/physicsandastronomy/ug/ugcourses/
Disallow: /psychology/internal/coursesandmodules/modules/
Disallow: /psychology/internal/coursesandmodules/pgcourses/
Disallow: /psychology/internal/coursesandmodules/ugcourses/
Disallow: /lifesci/kostakislab/picd/query
Disallow: /study/international-students/visiting-exchange-erasmus-students/modules/modules
Allow: /wcm/assets/media/
Allow: /wcm/assets/assetbank/
No sitemap found
Adding a sitemap helps search engines discover your pages.
BHTTP Probe TimingTotal 992 ms — DNS, TCP, TLS, TTFB, content transfer breakdownREVIEW
Connection waterfall
BTLS Certificate Expiry & Recommendations169 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
Recommended actions
- Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
- 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
ADNS Records1 A records, 851 ms lookupPASS
| A | 139.184.14.208 |
| AAAA | — |
| CNAME | — |
| NS | ns2.susx.ac.uk, dns0.cs.bham.ac.uk, ns1.susx.ac.uk, ns3.susx.ac.uk |
| MX | 10 eu-smtp-inbound-1.mimecast.com 10 eu-smtp-inbound-2.mimecast.com |
| TXT | 9b98af5c23ae169ef32bc5e24ee98a681334163e OMYpbsJGpWzaX1MYK8shoiMDdA9taoj+rsie6QrzCqaF3gx5wFJnpDuxSUuF3gblvbmL5MA/dShAc41h... SPF v=spf1 include:a3639jcm._spf._d.mim.ec ~all google-site-verification=lD61dtzAoE-bSJqQt0JeK06Q-oitdp-obkzcaVL0bWw bb2de3b057454882bca25a6bce3dd098 foo=bar brevo-code:40a0b540530a14e13737ee73475db166 apple-domain-verification=UDDOzreRbDqhbNjQ 39HO5MO22K23917NVB2OQ8EFEAVQ5HN3IMAU3RK29 VCi1W4B3pDKSlcQjeqiaqh4AhxKqROPApEEopnKCSx0= pardot295242=392887f309610c34c8844117f696abc3120b2b9d61fdc7be2cd4971c101ceeb6 ij0tx51gjzrtlhnfptyq868irv6hovivt4gdvo7f35i83dakk5zourlwj4fchwpmgytgxx1sm72rve17... XVFlm1DjgMc51vS7tyQ4TdB32Feff/yJSipX+FAK3Pk91wseODQzXp8bN7HwCtYXNxIDnvTE+kiuqO9f... |
| 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.
Slow DNS adds latency to every page load. Consider a faster DNS provider.
DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.
Source: DNS performance benchmarks
A+Domain Intelligencesussex.ac.uk — via No registrar listed. This domain is directly registered with Nominet., hosted on JANET Jisc Services Limited, GBPASS
Unknown
169 days
Issued by Sectigo Limited
Unknown
Status unknown
Protects against DNS spoofing
JANET Jisc Services Limited, GB
ASN AS786
139.184.14.208
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