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.
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 & Recommendations158 days until leaf cert expires — 6 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
- Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
- Add includeSubDomains to the HSTS directive
- Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
- 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, 30 ms lookupPASS
| A | 132.187.1.118 |
| AAAA | — |
| CNAME | — |
| NS | ns1.uni-wuerzburg.de, dns-1.dfn.de |
| MX | 10 mailgate1.uni-wuerzburg.de 20 mailgate2.uni-wuerzburg.de 50 mailgate3.uni-wuerzburg.de |
| TXT | have-i-been-pwned-verification=1352a02831dda4f5350106fd8e3bc6a0 google-site-verification=HvlnK4vE7FgW1nS0gWcrM62U7Ur5ijhMwUS6N_S7QfI google-gws-recovery-domain-verification=44231731 ZOOM_verify_c9CUBOSlRsye87MxztDHnA MS=6AC15D3B4C9DD593307D0D87FC3EC8DC8DDC2A54 MS=ms30322592 ZOOM_verify_RGCRKx07TOmbTzALbduE6w google-site-verification=B8fPWOFDpxErIBatCJVxw0S9CrhFW9Zi7iZEJX4QARQ SPF v=spf1 ip4:132.187.3.35 ip4:132.187.3.39 a:bvbvxmail.bib-bvb.de ~all ms30322592.msv1.invalid _telesec-domain-validation=2023-11-23_F8Yh3gkvud5tRB9wIKddlpqw9IFOHeDKA14a2CuszC... |
| 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.
ARedirect Chain1 redirect(s), 305 ms totalPASS
https://uni-wuerzburg.de
126 ms · HTTP/1.1
https://www.uni-wuerzburg.de/
179 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://uni-wuerzburg.de | 301 | 126 ms | HTTP/1.1 | Apache |
| 2 | https://www.uni-wuerzburg.de/ | 200 | 179 ms | HTTP/1.1 | Apache |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 1000 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: *
Disallow: /fileadmin/42010000/app-60a
Disallow: /fileadmin/11010300/
- https://www.uni-wuerzburg.de/projekte/campusmanagement/teilprojekte/veranstaltungsmanagement/
- https://www.uni-wuerzburg.de/projekte/campusmanagement/teilprojekte/pruefungsmanagement/
- https://www.uni-wuerzburg.de/uniarchiv/die-geschichte-unserer-universitaet/schlaglichter/gelehrtenportraet-wilhelm-wien/familienvater/
- https://www.uni-wuerzburg.de/chancengleichheit/kis/barrierefreiheit-von-gebaeuden/sortierung-nach-alphabet/career-center/
- https://www.uni-wuerzburg.de/chancengleichheit/kis/barrierefreiheit-von-gebaeuden/sortierung-nach-alphabet/chemie-hubland-campus-nord/
A+Domain Intelligenceuni-wuerzburg.de — hosted on DFN Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DEPASS
Unknown
158 days
Issued by Hellenic Academic and Research Institutions CA
Unknown
Status unknown
Protects against DNS spoofing
DFN Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE
ASN AS680
132.187.1.118
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