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https://wur.nl

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
82
GRADE
B
FIX
2
REVIEW
3
PASS
4
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
4 PASS 3 REVIEW 2 FIX
D
HTTP Probe Timing
Action
Total 2129 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
FIX
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
2.04 s
TCP Connect TCP Connect — time to establish a TCP connection to the server.
28 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
30 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
2.13 s
Total Time Total request time from DNS lookup through full response.
2.13 s

Connection waterfall

DNS Lookup 2.04 s TCP Connect 28 ms TLS Handshake 30 ms Server Processing 33 ms Content Transfer 0 ms
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

C
URL Variants
Action
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
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

200https://www.wur.nl/
200https://wur.nl/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://wur.nl/ → https://wur.nl/

Use 301 (permanent) instead of 302 (temporary)

B
TLS Certificate Expiry & Recommendations
82 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

82
days left
0d 30d 60d 90d+

Recommended actions

  • 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 Records
1 A records, 84 ms lookup
PASS
1 A records, 84 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 185.135.13.198
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: ns1.surfnet.nl, ns1.zurich.surf.net, ns-ext-01.wur.nl
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
Info::
DNS resolution time: 84 ms
Got: 84 ms
A185.135.13.198
AAAA—
CNAME—
NSns1.surfnet.nl, ns1.zurich.surf.net, ns-ext-01.wur.nl
MX
20 wur-nl.mail.protection.outlook.com
TXT
HARICA-u9Xcp29QRaj49Y8GZxI
google-site-verification=2PNL8D9m-UAGuQKnWqR9RrpcC1JNNtOTRZDwa-UK46A
google-site-verification=sG00vcl3N8f70CZt-rljFRVNDJt51hZB3t99walh0tA
miro-verification=5f8f1eb2d7b968bc4f2a370f239203da2834a436
facebook-domain-verification=xedebrgrmmuev45zolbm4vnbn2kjm6
HARICA-uhvzUeBNI313ACWami7
ciscocidomainverification=671e7d8b46bd7f5a9192489bed9f61f63db40683a92d35380b2165...
SPF v=spf1 include:spf-a.wur.nl include:spf-b.wur.nl include:spf-c.wur.nl include:sp...
google-gws-recovery-domain-verification=53198232
google-site-verification=9HmcJ5tr6JmHol0-avYSU42MlirCfvhdNA39KMspzzk
/jliZJlgUITe7moWjUNfx8Zl++h0+GJfnYAG0l2yxlIaQMNvKOo5Bh9sbIKAd5QXGqssQlIMbGSw5S3n...
X94mUDcm2BtZ/6KkgKck2tMlzrIO5BXfV9tFpOWj71mTdYEFAj/+30Q/pUGAzBMMvtiV6WcOuKBlYC7D...
docusign=4109e131-63bd-4244-8979-e727bcae3c7c
docusign=d2def383-4e7e-495e-9f2d-adac4fb28b12
teamviewer-sso-verification=1ffc23f5010241729e9f0c0171821972
have-i-been-pwned-verification=dweb_27njirix32pa6d7975nz0w6e
v=msv1 t=7BABAB5B-B595-467B-B42B-CC93C8CBC1D8
96rzjpr23wzv4jk0sbhxwz603pp244hq
atlassian-domain-verification=LdKEqDxRgvr54oOubpGUDyJLIb5BpJvgsLSe1G5IzYB852m7mG...
google-site-verification=mQNf3a5qRqqb3sXykluErxfcWm0V1q4H3ENsRSm4TL8
CAALookup not available with standard resolver
Resolved in 84 ms

Multiple A records provide failover if one server goes down.

Why this matters

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.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A
Redirect Chain
1 redirect(s), 350 ms total
PASS
1 redirect(s), 350 ms total
Info::
Single redirect
Got: https://wur.nl → https://www.wur.nl/ (301)
Info::
WWW normalization redirect

https://wur.nl

93 ms · HTTP/1.1

301

https://www.wur.nl/

257 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://wur.nl30193 msHTTP/1.1Apache
2https://www.wur.nl/200257 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

A
Crawlability
robots.txt present, no sitemap
PASS
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 1176 bytes
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.
Info::
robots.txt references sitemap

A sitemap helps search engines discover and index your pages more efficiently.

Why this matters

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

robots.txt 200 OK
Size 1176 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-Agent: *
Disallow: /api/
Disallow: /*?studievorm=
Disallow: /*?studietaal=
Disallow: /*?start=
Disallow: /*?interesse=
Disallow: /*?programme_form=
Disallow: /*?interest_area=
Disallow: /*?programme_language=
Disallow: /*?niveau=
Disallow: /*?interessegebied=
Disallow: /*?formaat=
Disallow: /*?accreditatie=
Disallow: /*?direct_starten=
Disallow: /*?voertaal=
Disallow: /*?groepsformaat=
Disallow: /*?prijs=
Disallow: /*?format=
Disallow: /*?accreditation=
Disallow: /*?course_starts_immediately=
Disallow: /*?language_of_instruction=
Disallow: /*?group_size=
Disallow: /*?price=
Disallow: /*?events=
Disallow: /*?type_faciliteit=
Disallow: /*?locatie=
Disallow: /*?gebruik=
Disallow: /*?facility_type=
Disallow: /*?location=
Disallow: /*?usage=
Disallow: /*?organisatie-eenheid=
Disallow: /*?organisational_unit=
Disallow: /*?opleidingsniveau=
Disallow: /*?vakgebied=
Disallow: /*?educational_level=
Disallow: /*?professional_field=
Disallow: /*?type=
Disallow: /*?type_product%2Fdienst=
Disallow: /*?diersoort=
Disallow: /*?product%2Fservice_type=
Disallow: /*?animal_species=
Disallow: /nl/zoeken?q=*
Disallow: /en/search?q=*

Sitemap: https://www.wur.nl/sitemap.xml
sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

A+
Domain Intelligence
wur.nl — via Wageningen Universiteit, 28 years, 1 months old, hosted on COMBELL-AS, BE
PASS
wur.nl — via Wageningen Universiteit, 28 years, 1 months old, hosted on COMBELL-AS, BE
Info::
DNSSEC is not enabled
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Info::
Registrar: Wageningen Universiteit
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.
Info::
Hosting: COMBELL-AS, BE
Got: AS34762
Domain expiry

Unknown

SSL certificate

82 days

Issued by Let's Encrypt

Domain age

28 years, 1 months

Registered August 11, 1998

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

COMBELL-AS, BE

ASN AS34762

185.135.13.198

Registrar

Wageningen Universiteit

Unlocked 3 NS records
Expiry timeline
Today
+1 year
SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar Wageningen Universiteit
Created August 11, 1998 (28 years, 1 months ago)
Last Updated March 21, 2024
Name Servers ns-ext-01.wur.nl, ns1.zurich.surf.net, ns1.surfnet.nl
DNSSEC Not enabled
Registrant Wageningen Universiteit
Hosting
IP Address 185.135.13.198
ASN AS34762 (COMBELL-AS, BE)
Provider COMBELL-AS, BE
Data source: rdap (0.6s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.

Learn more ▾

DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.

Source: ICANN / RFC 4033

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

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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