sanquin.nl

Checked 21 October 2026, 21:25 UTC · via 8.8.8.8
iAll checks passed
26 passed 0 warnings 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/sanquin.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/sanquin.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, 5 ms, authoritativenoyes / yesrefusedde3-14
dns42.cloudns.net 185.136.97.200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns42.cloudns.net 2a06:fb00:1::2:200NOERROR, 5 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, 4 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 1791386222 · primary dns41.cloudns.net

Found

Primary (MNAME)
dns41.cloudns.net
Contact (RNAME)
hostmaster.pi-group.net
Serial
1791386222
Refresh / retry
86400 s / 7200 s
Expire
3600000 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns41.cloudns.net (185.136.96.200)1791386222
dns41.cloudns.net (2a06:fb00:1::1:200)1791386222
dns42.cloudns.net (185.136.97.200)1791386222
dns42.cloudns.net (2a06:fb00:1::2:200)1791386222
dns43.cloudns.net (185.136.98.200)1791386222
dns43.cloudns.net (2a06:fb00:1::3:200)1791386222
dns44.cloudns.net (185.136.99.200)1791386222
dns44.cloudns.net (2a06:fb00:1::4:200)1791386222

Checks

  • ✓ Serial 1791386222 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 2h, expire 1000h, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns41.cloudns.net is one of the listed nameservers.
  • ✓ Contact hostmaster@pi-group.net #25
    The SOA RNAME hostmaster.pi-group.net means hostmaster@pi-group.net.
  • ✓ Timestamp serial #26
    The serial 1791386222 is a Unix timestamp (2026-10-07 15:17 UTC).

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
6 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
53362ECDSAP256SHA256 (13)SHA256 EC803D751EFC7CA2…yes

DNSKEY in the zone

Key tagRoleAlgorithm
28832ZSK (256)ECDSAP256SHA256 (13)
53362KSK (257)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 53362 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-11-06 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-06 14:17 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

info

22 records at the apex

Found

Read from
185.136.96.200:53
TypeValueTTL
SOAdns41.cloudns.net. hostmaster.pi-group.net. 1791386222 86400 7200 3600000 36003600
NSdns42.cloudns.net.3600
NSdns44.cloudns.net.3600
NSdns41.cloudns.net.3600
NSdns43.cloudns.net.3600
A87.233.198.73600
AAAA2001:9a8:a6:0:87:233:198:73600
MX10 sanquin-nl.e-v1.mx.microsoft.3600
TXT"v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAo0E5Zv5UsV3bfOCt6O3TbjehDllOOU+VkfsGefR4s80VchP5flerSOAxdTnvSJQ2RF3d/pwL7KOre43+xkDSrK6Rh4QaUUjT71NsN3wxDprvWV9ZhUwgkmJiJfC3nKkgvo12cwyvdwxVjMifHFqu7LetNkNodV/8X/wSrX2xGXEDienehv/plGi3P" "wRs9J50U4grlU6NLnJc2pUeagvUFl5hBr/g3a1dAssXbYJxnzLmK1/Buo3k0xJneKDnKF+TPQnrVBBQ6Hny28LlvBvjE+p8zmbz8s4dD13ae5rYxXB4m/5gWu4VfpWO74cfK+VOntszagFpWb/3WMK35mYo9wIDAQAB"3600
TXT"google-site-verification=-ec0oeV7IqSohxMpM5buF_cE3ZolBzYEH8KBy0zCwmk"3600
TXT"d365mktkey=tSyiTJY6pbu39zJHLIKwliVuYXEj7gZlueURkAmCN94x"3600
TXT"d365mktkey=dGL4WtZjIqiJ2ZD5uoxxySPfV2OxQY4UrGeUSFUxFCsx"3600
TXT"bEgx0mqm+0lOhQpBoYF53cmNU+wZrMzAfa5lJ0c1LuBJVNUtt0t0JPbjNbrW5mpcjpFmDYy7FWdnmxHNUnjkTg=="3600
TXT"MS=ms30850868"3600
TXT"google-site-verification=YI9TPA_9SZud_2JAjlVY5ZTH33MbgQu-yVN3ge1hQJM"3600
TXT"v=NTA7516-1;startdate=2022-09;enddate=2025-09;provider=zorgmail;ntamx=10 relay.zorgmail.nl"3600
TXT"47hxf0wnzb8g7hy8ps45r4cg8g4j6ysm"3600
TXT"v=spf1 redirect=4xa2pug2._spf._d.mim.ec"3600
TXT"yPFDHMEtUpC/6w9jIP/MMgFXWlM+Y/gAogjYl0GDfbqigSGCl961KV7E+viCNw8cHMkkX/YzEYQ6SQbc8sirqw=="3600
TXT"google-site-verification=QZTW0wqCqhRQSsR2RlXxOl1-FwIlpULQUqQJHPBX7SU"3600
TXT"_l5ud314113jv3z2o7erjeu64fgtuic0"3600
TXT"facebook-domain-verification=be7xcu6vbqne0xmh33k7zot32a6es0"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 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