Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DRedirect ChainAction2 redirect(s), 1907 ms totalFIX
https://kuleuven.be
728 ms · HTTP/1.1
https://www.kuleuven.be/
587 ms · HTTP/1.1
https://www.kuleuven.be/kuleuven/
592 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://kuleuven.be | 301 | 728 ms | HTTP/1.1 | Caddy |
| 2 | https://www.kuleuven.be/ | 301 | 587 ms | HTTP/1.1 | Apache/2.4.62 |
| 3 | https://www.kuleuven.be/kuleuven/ | 200 | 592 ms | HTTP/1.1 | Apache/2.4.62 |
See the visual redirect chain in the HTTP Probe tab →
Each redirect adds latency. Try to minimize the chain to 1 hop.
Redirect chain — each hop adds latency; combine into one redirect where possible.
Source: Google Search Central / web.dev
FIPv6 ReadinessActionIPv6 records exist but unreachableFIX
Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.
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)
DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
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: /bevestiging-inschrijving
Disallow: /cgi-bin/
Disallow: /english/application-submitted
Disallow: /english/life-at-ku-leuven/money-matters/social-services-students/reduced-tuition-fee
Disallow: /english/registration-completed
Disallow: /maps/
Disallow: /opleidingen/bachelor-architectuur
Disallow: /opleidingen/bachelor-biologie
Disallow: /opleidingen/bachelor-biomedische-wetenschappen
Disallow: /opleidingen/bachelor-chemie
Disallow: /opleidingen/bachelor-fysica
Disallow: /opleidingen/bachelor-geneeskunde
Disallow: /opleidingen/bachelor-geschiedenis
Disallow: /opleidingen/bachelor-handelswetenschappen
Disallow: /opleidingen/bachelor-industriele-wetenschappen
Disallow: /opleidingen/bachelor-informatica
Disallow: /opleidingen/bachelor-interieurarchitectuur
Disallow: /opleidingen/bachelor-rechten
Disallow: /opleidingen/bachelor-revalidatiewetenschappen-kinesitherapie
Disallow: /opleidingen/bachelor-taal-letterkunde
Disallow: /opleidingen/bachelor-toegepaste-economische-wetenschappen
Disallow: /opleidingen/bachelor-toegepaste-taalkunde
Disallow: /opleidingen/master-accountancy-analytics/schakelprogramma
Disallow: /opleidingen/master-architectuur/schakelprogramma
Disallow: /opleidingen/master-architectuur/voorbereidingsprogramma
Disallow: /opleidingen/master-biomedische-wetenschappen/schakelprogramma
Disallow: /opleidingen/master-handelswetenschappen
Disallow: /opleidingen/master-industriele-wetenschappen-bouwkunde
Disallow: /opleidingen/master-industriele-wetenschappen-chemie
Disallow: /opleidingen/master-industriele-wetenschappen-elektromechanica
Disallow: /opleidingen/master-industriele-wetenschappen-elektronica-ict
Disallow: /opleidingen/master-industriele-wetenschappen-energie
Disallow: /opleidingen/master-interieurarchitectuur
Disallow: /opleidingen/master-rechten/schakelprogramma
Disallow: /opleidingen/master-stedenbouw-ruimtelijke-planning
Disallow: /persoverzicht/
Disallow: /programmes/master-business-administration
Disallow: /sapredir/
Disallow: /test/
No sitemap found
Adding a sitemap helps search engines discover your pages.
BTLS Certificate Expiry & Recommendations184 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, 155 ms lookupPASS
| A | 134.58.64.162 |
| AAAA | 2a02:2c40:0:80::80:a4 |
| CNAME | — |
| NS | dns1.kulnet.kuleuven.be, dns2.kulnet.kuleuven.be |
| MX | 10 cavin.kuleuven.be 20 kromsin.cc.kuleuven.be 20 limbak.cc.kuleuven.be 30 cavin02.kuleuven.be 30 cavin01.kuleuven.be 30 cavin03.kuleuven.be |
| TXT | linear-domain-verification=2y5757t3etwj docusign=af6727a7-89da-432b-93f3-8f382fa51914 google-site-verification=CAbH28xIl30qPcVDpm_7kborgiYb1k2LKXwV8gJ3nuA af6GPUS75x/c2w2wQVa2ZpUPwVNjRUn6TP0j2S2PbMHQgoq6QO4CJAooKUs0OF58/1exvR64eZUTq8rE... OSSRH-48090 apple-domain-verification=vplHa7Trg4h7Su5j google-site-verification=uo1UJBLxNGSyP8e-_FegmG6rHTfkzmg93sbqLY8xvNg jamf-site-verification=uojHPtKnAx48ugOkIglJgQ wim=1 google-site-verification=SGGwxxsT7lvxUZyXNYY2VVwe2uhYfpSlmblKTAQfRyw jetbrains-domain-verification=q7n3msub5lwwihr3gz276igi spf2.0/pra include:_spf.kuleuven.be ?all IwRLkSQWxjEqA3WNM0EYB+rvlxVfrDPt4yiASgi62nTZRkHIVRdHXvtzgSAZyqHLQAAEUER1yfS1QKX0... docusign=c7f4684a-d588-4d62-a1ea-04ae05102c2b atlassian-domain-verification=5lXcH18NiCI3YKWFyQACIXR85MZ8bgSLp1t9R38aDkjJtQqu8V... SPF v=spf1 include:_spf.kuleuven.be ?all |
| 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+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencekuleuven.be — hosted on BELNET, BEPASS
Unknown
184 days
Issued by Hellenic Academic and Research Institutions CA
Unknown
Status unknown
Protects against DNS spoofing
BELNET, BE
ASN AS2611
134.58.64.162
Registrar unknown
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