verbeterjehuis.nl

Checked 22 October 2026, 17:01 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 7 info

Registration

info

.nl country-code

Found

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

Delegation

info

dns41.cloudns.net, dns42.cloudns.net, dns43.cloudns.net, dns44.cloudns.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
dns41.cloudns.net, dns42.cloudns.net, dns43.cloudns.net, dns44.cloudns.net
NS in the zone
dns41.cloudns.net, dns42.cloudns.net, dns43.cloudns.net, dns44.cloudns.net
NameserverAddressesNetwork (AS)Glue
dns41.cloudns.net185.136.96.200 2a06:fb00:1::1:200AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
dns42.cloudns.net185.136.97.200 2a06:fb00:1::2:200AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
dns43.cloudns.net185.136.98.200 2a06:fb00:1::3:200AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
dns44.cloudns.net185.136.99.200 2a06:fb00:1::4:200AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-

Checks

  • ✓ 4 nameservers #6
    Delegated to dns41.cloudns.net, dns42.cloudns.net, dns43.cloudns.net, dns44.cloudns.net.
  • ✓ 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.
  • i
    One address family in one network
    all IPv6 addresses are in 2a06:fb00:1::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS203391 (CLOUDNSNET - Cloud DNS Ltd, BG): 8 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 .net
    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

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns41.cloudns.net 185.136.96.200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns41.cloudns.net 2a06:fb00:1::1:200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns42.cloudns.net 185.136.97.200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns42.cloudns.net 2a06:fb00:1::2:200NOERROR, 7 ms, authoritativenoyes / yesrefusedde3-14
dns43.cloudns.net 185.136.98.200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns43.cloudns.net 2a06:fb00:1::3:200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns44.cloudns.net 185.136.99.200NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-14
dns44.cloudns.net 2a06:fb00:1::4:200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14

Checks

  • ✓ All respond #14
    All 8 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: dns41.cloudns.net: "de3-14"; dns42.cloudns.net: "de3-14"; dns43.cloudns.net: "de3-14"; dns44.cloudns.net: "de3-14".
    #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 2026100501 · primary dns41.cloudns.net

Found

Primary (MNAME)
dns41.cloudns.net
Contact (RNAME)
support.cloudns.net
Serial
2026100501
Refresh / retry
7200 s / 1800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns41.cloudns.net (185.136.96.200)2026100501
dns41.cloudns.net (2a06:fb00:1::1:200)2026100501
dns42.cloudns.net (185.136.97.200)2026100501
dns42.cloudns.net (2a06:fb00:1::2:200)2026100501
dns43.cloudns.net (185.136.98.200)2026100501
dns43.cloudns.net (2a06:fb00:1::3:200)2026100501
dns44.cloudns.net (185.136.99.200)2026100501
dns44.cloudns.net (2a06:fb00:1::4:200)2026100501

Checks

  • ✓ Serial 2026100501 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 30m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns41.cloudns.net is one of the listed nameservers.
  • ✓ Contact support@cloudns.net #25
    The SOA RNAME support.cloudns.net means support@cloudns.net.
  • ✓ Date-based serial #26
    The serial 2026100501 follows the YYYYMMDDnn convention (2026-10-05).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
0 iterations, 0-byte salt
Signatures valid until
4 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
60565ECDSAP256SHA256 (13)SHA256 1F5D6826FE20F648…yes

DNSKEY in the zone

Key tagRoleAlgorithm
60565KSK (257)ECDSAP256SHA256 (13)
55001ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 60565 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-11-04 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-04 13:38 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

warn

13 records at the apex

Found

Read from
185.136.96.200:53
TypeValueTTL
SOAdns41.cloudns.net. support.cloudns.net. 2026100501 7200 1800 1209600 36003600
NSdns42.cloudns.net.3600
NSdns43.cloudns.net.3600
NSdns44.cloudns.net.3600
NSdns41.cloudns.net.3600
A172.67.211.960
A104.21.53.8860
AAAA2606:4700:3035::6815:355860
AAAA2606:4700:3033::ac43:d30960
MX10 mx1.improvmx.com.900
MX20 mx2.improvmx.com.900
TXT"v=spf1 include:spf.improvmx.com include:mail.zendesk.com include:u10356192.wl193.sendgrid.net -all"900
TXT"google-site-verification=bvUIFh02x9wf0bsW1yzQTNudWREPq0mWvLwWhxNST6I"900

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), AAAA (1m). Low TTLs are useful just before a planned change.
    #32
  • ✓ 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