kijkonderzoek.nl

Checked 22 October 2026, 14:02 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 warnings 0 failed 7 info

Registration

info

.nl country-code · Registrar.eu

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Registrar.eu
Registered
24 February 2000
Last changed
11 July 2025
Status
active
Registry nameservers
ns1.soko.nl, ns2.soko.nl, ns3.soko.nl
RDAP server
https://rdap.sidn.nl/

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
    Expiry date not published
    The registry does not publish the expiry date in RDAP. Check it with your registrar.
    #3
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.soko.nl, ns2.soko.nl, ns3.soko.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.soko.nl, ns2.soko.nl, ns3.soko.nl
NS in the zone
ns1.soko.nl, ns2.soko.nl, ns3.soko.nl
NameserverAddressesNetwork (AS)Glue
ns1.soko.nl109.235.73.236AS25151 CYSO-AS - Cyso Group B.V., NL-
ns2.soko.nl93.94.227.166AS25151 CYSO-AS - Cyso Group B.V., NL-
ns3.soko.nl46.23.87.195AS60131 HIGH5-NL - High5! B.V., NL-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.soko.nl, ns2.soko.nl, ns3.soko.nl.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ 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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS25151 (CYSO-AS - Cyso Group B.V., NL): 2 addresses; AS60131 (HIGH5-NL - High5! B.V., NL): 1 address.
  • 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

info

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.soko.nl 109.235.73.236NOERROR, 12 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns2.soko.nl 93.94.227.166NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns3.soko.nl 46.23.87.195NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

Checks

  • ✓ All respond #14
    All 3 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.soko.nl: "Served by PowerDNS - https://www.powerdns.com/"; ns2.soko.nl: "Served by PowerDNS - https://www.powerdns.com/"; ns3.soko.nl: "Served by PowerDNS - https://www.powerdns.com/".
    #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 2026020503 · primary ns1.sqr.nl

Found

Primary (MNAME)
ns1.sqr.nl
Contact (RNAME)
hostmaster.kijkonderzoek.nl
Serial
2026020503
Refresh / retry
3600 s / 3600 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.soko.nl (109.235.73.236)2026020503
ns2.soko.nl (93.94.227.166)2026020503
ns3.soko.nl (46.23.87.195)2026020503

Checks

  • ✓ Serial 2026020503 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 14d, negative TTL 1d.
    #23
  • i
    Hidden master
    The primary nameserver ns1.sqr.nl is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact hostmaster@kijkonderzoek.nl #25
    The SOA RNAME hostmaster.kijkonderzoek.nl means hostmaster@kijkonderzoek.nl.
  • ✓ Date-based serial #26
    The serial 2026020503 follows the YYYYMMDDnn convention (2026-02-05).

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

7 records at the apex

Found

Read from
109.235.73.236:53
TypeValueTTL
SOAns1.sqr.nl. hostmaster.kijkonderzoek.nl. 2026020503 3600 3600 1209600 864003600
NSns2.soko.nl.3600
NSns1.soko.nl.3600
NSns3.soko.nl.3600
A37.46.140.233600
MX0 kijkonderzoek-nl.mail.protection.outlook.com.3600
TXT"v=spf1 a mx include:spf.soko.nl include:spf.protection.outlook.com ~all"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