hu.nl

Checked 21 October 2026, 21:22 UTC · via 8.8.8.8
!Passed with warnings
21 passed 2 warnings 0 failed 6 info

Registration

info

.nl country-code

Found

TLD
.nl (country-code)
ICANN policies apply
no
Lookup error: https://rdap.sidn.nl/domain/hu.nl returned HTTP 429

Checks

  • i
    .nl is a country-code TLD (ccTLD)
    Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.
    #1
  • ✓ TLD delegated and signed #2
    .nl is delegated in the root zone and DNSSEC-signed.
  • i
    Could not be checked
    The RDAP lookup failed, so this could not be checked: https://rdap.sidn.nl/domain/hu.nl returned HTTP 429
    #3

Delegation

warn

ns2.hvu.nl, ns2.surfnet.nl, watson.hvu.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns2.hvu.nl, ns2.surfnet.nl, watson.hvu.nl
NS in the zone
ns2.hvu.nl, ns2.surfnet.nl, watson.hvu.nl
NameserverAddressesNetwork (AS)Glue
ns2.hvu.nl145.89.83.3 2001:610:310:1100::83:3AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL145.89.83.3
ns2.surfnet.nl192.87.36.2 2001:610:3:200a:192:87:36:2AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL192.87.36.2 2001:610:3:200a:192:87:36:2
watson.hvu.nl145.89.38.3 2001:610:310:1000::38:3AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL145.89.38.3

Checks

  • ✓ 3 nameservers #6
    Delegated to ns2.hvu.nl, ns2.surfnet.nl, watson.hvu.nl.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns2.hvu.nl (glue 145.89.83.3, zone 145.89.83.3, 2001:610:310:1100::83:3); watson.hvu.nl (glue 145.89.38.3, zone 145.89.38.3, 2001:610:310:1000::38:3). Update the glue at your registrar.
    #8
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 3 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS1103 (SURFNET-NL - SURF B.V., NL): 6 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .nl
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns2.hvu.nl 145.89.83.3NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns2.hvu.nl 2001:610:310:1100::83:3NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns2.surfnet.nl 192.87.36.2NOERROR, 12 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns2.surfnet.nl 2001:610:3:200a:192:87:36:2NOERROR, 16 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
watson.hvu.nl 145.89.38.3NOERROR, 11 ms, authoritativenoyes / yesrefused-
watson.hvu.nl 2001:610:310:1000::38:3NOERROR, 12 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 6 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns2.surfnet.nl: "This is a SURFnet nameserver - dns-beheer@surfnet.nl".
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2060851740 · primary watson.hvu.nl

Found

Primary (MNAME)
watson.hvu.nl
Contact (RNAME)
hostmaster.hu.nl
Serial
2060851740
Refresh / retry
10800 s / 3600 s
Expire
2419200 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns2.hvu.nl (145.89.83.3)2060851740
ns2.hvu.nl (2001:610:310:1100::83:3)2060851740
ns2.surfnet.nl (192.87.36.2)2060851740
ns2.surfnet.nl (2001:610:3:200a:192:87:36:2)2060851740
watson.hvu.nl (145.89.38.3)2060851740
watson.hvu.nl (2001:610:310:1000::38:3)2060851740

Checks

  • ✓ Serial 2060851740 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 28d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver watson.hvu.nl is one of the listed nameservers.
  • ✓ Contact hostmaster@hu.nl #25
    The SOA RNAME hostmaster.hu.nl means hostmaster@hu.nl.
  • ✓ Timestamp serial #26
    The serial 2060851740 is a Unix timestamp (2035-04-22 10:49 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

20 records at the apex

Found

Read from
145.89.83.3:53
TypeValueTTL
SOAwatson.hvu.nl. hostmaster.hu.nl. 2060851740 10800 3600 2419200 60028800
NSns2.hvu.nl.28800
NSwatson.hvu.nl.28800
NSns2.surfnet.nl.28800
A20.50.2.1728800
MX10 hu-nl.mail.protection.outlook.com.28800
TXT"google-site-verification=aZzOk4BTEfdJQlwC0FJzEFncQ6ay6GfPNVtLDTm4ckE"28800
TXT"DomainVerification=GR6CYDSL86WNBCI8EZG3Q6GEDGTGIXSWXKVCTQ1NW85VL2C6K3FLF41JCSNN0UUH"28800
TXT"autodesk-domain-verification=J-zyK8uSVt4qcWGNsup2"28800
TXT"HARICA-DgSg1eKiWSM0eveRjKF"28800
TXT"jamf-site-verification=IMnJ957lQyYGpFRXpATWFQ"28800
TXT"e+1K6MxrUG3sJiyFlv6E3tpd1GZo44JCwMMc4elyM8PQErpc7Izq2ZFPyZZde6XMGNuJT1wfQqSk506FYTaD5w=="28800
TXT"MS=ms31644939"28800
TXT"v=spf1 include:spf.hu.nl.eu-3m7rf0o1.e1.dspf.app include:spf.protection.outlook.com -all"28800
TXT"pardot700273=f6061a6b6bd8c741072b96dc541dae2ceb7362a98f5cf1aedd711ee26ffb132e"28800
TXT"signrequest-domain-verification=bea92c1c2c7e2b61e87e1b2a985758c689d0ae813538e01f950bef0e46e0cd23"28800
TXT"google-site-verification=8lF8oekV3djIfEkVkxIucbeER3qF8DHJh32-bK-Q6jE"28800
TXT"adobe-idp-site-verification=c56a3694a2b32457d490c96dac92cd9b11c33917547fadbe31bd47834229bcad"28800
TXT"apple-domain-verification=vIuTEzNtfsu46TxH"28800
TXT"Sendinblue-code:deca8439cf3860647ffc3a8297786cc1"28800

Checks

  • ✓ TTLs within range #32
    TTLs: A 8h, MX 8h, NS 8h. The NS TTL at the parent is 1h and in the zone 8h; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35