windesheim.nl

Checked 21 October 2026, 21:26 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 warnings 0 failed 5 info

Registration

info

.nl country-code

Found

TLD
.nl (country-code)
ICANN policies apply
no
Lookup error: https://rdap.sidn.nl/domain/windesheim.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/windesheim.nl returned HTTP 429
    #3

Delegation

info

ns1.zurich.surf.net, ns2.surfnet.nl, ns2.windesheim.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.zurich.surf.net, ns2.surfnet.nl, ns2.windesheim.nl
NS in the zone
ns1.zurich.surf.net, ns2.surfnet.nl, ns2.windesheim.nl
NameserverAddressesNetwork (AS)Glue
ns1.zurich.surf.net195.176.255.9 2001:620:0:9::1103AS559 Switch - SWITCH, CH AS559 Switch - SWITCH, CH-
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
ns2.windesheim.nl145.44.228.17AS1103 SURFNET-NL - SURF B.V., NL145.44.228.17

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.zurich.surf.net, ns2.surfnet.nl, ns2.windesheim.nl.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns2.windesheim.nl.
  • ✓ 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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS1103 (SURFNET-NL - SURF B.V., NL): 3 addresses; AS559 (Switch - SWITCH, CH): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .net, .nl.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns2.windesheim.nl.
    #13

Nameservers

info

5 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.zurich.surf.net 195.176.255.9NOERROR, 9 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surf.nl
ns1.zurich.surf.net 2001:620:0:9::1103NOERROR, 9 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surf.nl
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, 12 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns2.windesheim.nl 145.44.228.17NOERROR, 11 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 5 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: ns1.zurich.surf.net: "This is a SURFnet nameserver - dns-beheer@surf.nl"; 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

warn

serial 2012113434 · primary ns2.windesheim.nl

Found

Primary (MNAME)
ns2.windesheim.nl
Contact (RNAME)
connectivity.windesheim.nl
Serial
2012113434
Refresh / retry
900 s / 600 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.zurich.surf.net (195.176.255.9)2012113434
ns1.zurich.surf.net (2001:620:0:9::1103)2012113434
ns2.surfnet.nl (192.87.36.2)2012113434
ns2.surfnet.nl (2001:610:3:200a:192:87:36:2)2012113434
ns2.windesheim.nl (145.44.228.17)2012113434

Checks

  • ✓ Serial 2012113434 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d. Current values: refresh 15m, retry 10m, expire 14d, negative TTL 1h.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns2.windesheim.nl is one of the listed nameservers.
  • ✓ Contact connectivity@windesheim.nl #25
    The SOA RNAME connectivity.windesheim.nl means connectivity@windesheim.nl.
  • ✓ Timestamp serial #26
    The serial 2012113434 is a Unix timestamp (2033-10-05 08:23 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

21 records at the apex

Found

Read from
195.176.255.9:53
TypeValueTTL
SOAns2.windesheim.nl. connectivity.windesheim.nl. 2012113434 900 600 1209600 36003600
NSns1.zurich.surf.net.3600
NSns2.windesheim.nl.3600
NSns2.surfnet.nl.3600
A20.105.224.123600
MX0 windesheim-nl.mail.protection.outlook.com.3600
TXT"wWJdhI5HDykfU8l967SUFcxwMUAEgnnVhgJpRoAbtAL8O5BAzb1dwT0Y7eJeWNkqoa6yr03w3LwhQCkZIszDZA=="3600
TXT"QuoVadis=537848ca-72f9-4c61-bf98-98346f72345b"3600
TXT"ms-domain-verification=4182b2ac-f99d-4fed-ab2e-0aced45853f9"3600
TXT"v=spf1 include:spf.protection.outlook.com ip4:145.44.16.0/23 include:clients.summit.nl include:mailplus.nl include:spf.formdesk.com include:_spf.eu.messagegears.net include:lms.plusport.com -all"3600
TXT"jamf-site-verification=KGfWiYGLeU2OSXsfTVKyNA"3600
TXT"d365mktkey=zxnUe3pPcfb4RoQCesqNItSsOAgvLymmxxJKxIb0ulsx"3600
TXT"c6094d2f-ee90-4ddd-bafd-5df62d4ce71c-09102019"3600
TXT"wmmUYFsnA8lDmMoH3Mppj0NGWRgVjiVO1y8s7MKlvc+rR0L+nNfdYyojKQ8rhwdO4/1gsseCmxNYkkJPghOSsw=="3600
TXT"jkk2m02fpn2p972s0s3zrtllz1kvpvbd"3600
TXT"h5rwrs9rpxrhdvrz0sj463rll669b6sz"3600
TXT"apple-domain-verification=iPAv8afa6ii6pqWa"3600
TXT"google-site-verification=3As08rqxi3AshstdQzci7XN8kRQAugdp0cC2QrgXYn8"3600
TXT"s75zzzydwdf6g6q7j2smyh85js05r26k"3600
TXT"openai-domain-verification=dv-YhSC4ArjRxO8kPFobir6IKh2"3600
TXT"1wd7lwlcbtncwg164s3cqj530chkr9fd"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 1h.
  • ✓ 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