hartstichting.nl

Checked 21 October 2026, 21:21 UTC · via 8.8.8.8
✗Problems found
21 passed 1 warning 1 failed 8 info

Registration

info

.nl country-code · Realtime Register

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Realtime Register
Registered
23 July 1996
Last changed
30 November 2021
Status
active
Registry nameservers
ns1.argewebhosting.eu, ns2.argewebhosting.com, ns3.argewebhosting.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

info

ns1.argewebhosting.eu, ns2.argewebhosting.com, ns3.argewebhosting.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.argewebhosting.eu, ns2.argewebhosting.com, ns3.argewebhosting.nl
NS in the zone
ns1.argewebhosting.eu, ns2.argewebhosting.com, ns3.argewebhosting.nl
NameserverAddressesNetwork (AS)Glue
ns1.argewebhosting.eu31.25.98.210 2a05:1500:702:0:1c00:eff:fe00:ceAS48635 CLDIN-NL - Your Hosting B.V., NL --
ns2.argewebhosting.com31.25.98.169 2a05:1500:702:0:1c00:13ff:fe00:a5AS48635 CLDIN-NL - Your Hosting B.V., NL --
ns3.argewebhosting.nl92.63.168.137 2a05:1500:600:7:1c00:55ff:fe00:f1aAS48635 AS48635 92.63.168.137 2a05:1500:600:7:1c00:55ff:fe00:f1a

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.argewebhosting.eu, ns2.argewebhosting.com, ns3.argewebhosting.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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS48635 (CLDIN-NL - Your Hosting B.V., NL): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .com, .eu, .nl.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

fail

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.argewebhosting.eu 31.25.98.210NOERROR, 11 ms, authoritativenono / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1.argewebhosting.eu 2a05:1500:702:0:1c00:eff:fe00:ceNOERROR, 11 ms, authoritativenono / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns2.argewebhosting.com 31.25.98.169NOERROR, 11 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns2.argewebhosting.com 2a05:1500:702:0:1c00:13ff:fe00:a5NOERROR, 11 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns3.argewebhosting.nl 92.63.168.137NOERROR, 11 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns3.argewebhosting.nl 2a05:1500:600:7:1c00:55ff:fe00:f1aNOERROR, 11 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

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: ns1.argewebhosting.eu: "Served by PowerDNS - https://www.powerdns.com/"; ns2.argewebhosting.com: "Served by PowerDNS - https://www.powerdns.com/"; ns3.argewebhosting.nl: "Served by PowerDNS - https://www.powerdns.com/".
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns1.argewebhosting.eu (31.25.98.210): read tcp 46.225.38.91:52222->31.25.98.210:53: i/o timeout; ns1.argewebhosting.eu (2a05:1500:702:0:1c00:eff:fe00:ce): read tcp [2a01:4f8:1c1c:eebf::1]:45396->[2a05:1500:702:0:1c00:eff:fe00:ce]:53: i/o timeout.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

warn

serial 2026101204 · primary ns3.argewebhosting.nl

Found

Primary (MNAME)
ns3.argewebhosting.nl
Contact (RNAME)
plesk.cldin.eu
Serial
2026101204
Refresh / retry
300 s / 3600 s
Expire
604800 s
Negative TTL
10800 s

Serial per nameserver

NameserverSerial
ns1.argewebhosting.eu (31.25.98.210)2026101204
ns1.argewebhosting.eu (2a05:1500:702:0:1c00:eff:fe00:ce)2026101204
ns2.argewebhosting.com (31.25.98.169)2026101204
ns2.argewebhosting.com (2a05:1500:702:0:1c00:13ff:fe00:a5)2026101204
ns3.argewebhosting.nl (92.63.168.137)2026101204
ns3.argewebhosting.nl (2a05:1500:600:7:1c00:55ff:fe00:f1a)2026101204

Checks

  • ✓ Serial 2026101204 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 5m is outside 20m–1d; retry 1h should be shorter than refresh 5m. Current values: refresh 5m, retry 1h, expire 7d, negative TTL 3h.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns3.argewebhosting.nl is one of the listed nameservers.
  • ✓ Contact plesk@cldin.eu #25
    The SOA RNAME plesk.cldin.eu means plesk@cldin.eu.
  • ✓ Date-based serial #26
    The serial 2026101204 follows the YYYYMMDDnn convention (2026-10-12).

DNSSEC

info

DNS query for hartstichting.nl failed: read udp 46.225.38.91:55631->8.8.8.8:53: i/o timeout

Checks

  • i
    Could not be checked
    The DNSSEC lookup failed, so this could not be checked: DNS query for hartstichting.nl failed: read udp 46.225.38.91:55631->8.8.8.8:53: i/o timeout
    #27

Records

info

6 records at the apex

Found

Read from
31.25.98.210:53
TypeValueTTL
SOAns3.argewebhosting.nl. plesk.cldin.eu. 2026101204 300 3600 604800 10800617
NSns2.argewebhosting.com.617
NSns1.argewebhosting.eu.617
NSns3.argewebhosting.nl.617
A104.26.5.32617
MX0 hartstichting-nl.mail.protection.outlook.com.617

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m17s, MX 10m17s, NS 10m17s. The NS TTL at the parent is 1h and in the zone 10m17s; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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