zuyderland.nl

Checked 22 October 2026, 17:31 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/zuyderland.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/zuyderland.nl returned HTTP 429
    #3

Delegation

info

dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net
NS in the zone
dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net
NameserverAddressesNetwork (AS)Glue
dns1.p01.nsone.net198.51.44.1 2620:4d:4000:6259:7:1:0:1AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns2.p01.nsone.net198.51.45.1 2a00:edc0:6259:7:1::2AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns3.p01.nsone.net198.51.44.65 2620:4d:4000:6259:7:1:0:3AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns4.p01.nsone.net198.51.45.65 2a00:edc0:6259:7:1::4AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.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.
  • ✓ 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 (AS62597 (NSONE - NSONE Inc, US): 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
dns1.p01.nsone.net 198.51.44.1NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns1.p01.nsone.net 2620:4d:4000:6259:7:1:0:1NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns2.p01.nsone.net 198.51.45.1NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns2.p01.nsone.net 2a00:edc0:6259:7:1::2NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns3.p01.nsone.net 198.51.44.65NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns3.p01.nsone.net 2620:4d:4000:6259:7:1:0:3NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns4.p01.nsone.net 198.51.45.65NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns4.p01.nsone.net 2a00:edc0:6259:7:1::4NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9

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: dns1.p01.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; dns2.p01.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; dns3.p01.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; dns4.p01.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9".
    #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 1733903336 · primary dns1.p01.nsone.net

Found

Primary (MNAME)
dns1.p01.nsone.net
Contact (RNAME)
hostmaster.nsone.net
Serial
1733903336
Refresh / retry
43200 s / 7200 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
dns1.p01.nsone.net (198.51.44.1)1733903336
dns1.p01.nsone.net (2620:4d:4000:6259:7:1:0:1)1733903336
dns2.p01.nsone.net (198.51.45.1)1733903336
dns2.p01.nsone.net (2a00:edc0:6259:7:1::2)1733903336
dns3.p01.nsone.net (198.51.44.65)1733903336
dns3.p01.nsone.net (2620:4d:4000:6259:7:1:0:3)1733903336
dns4.p01.nsone.net (198.51.45.65)1733903336
dns4.p01.nsone.net (2a00:edc0:6259:7:1::4)1733903336

Checks

  • ✓ Serial 1733903336 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 2h, expire 14d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.p01.nsone.net is one of the listed nameservers.
  • ✓ Contact hostmaster@nsone.net #25
    The SOA RNAME hostmaster.nsone.net means hostmaster@nsone.net.
  • ✓ Timestamp serial #26
    The serial 1733903336 is a Unix timestamp (2024-12-11 07:48 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
23 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
48553ECDSAP256SHA256 (13)SHA256 6E1833931DD64E1C…yes

DNSKEY in the zone

Key tagRoleAlgorithm
48553KSK (257)ECDSAP256SHA256 (13)
12196ZSK (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 48553 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 26h0m0s and created on demand; the current one was made at 2026-10-22 16:31 UTC and expires at 2026-10-23 18:31 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

info

28 records at the apex

Found

Read from
198.51.44.1:53
TypeValueTTL
SOAdns1.p01.nsone.net. hostmaster.nsone.net. 1733903336 43200 7200 1209600 300300
NSdns1.p01.nsone.net.3600
NSdns2.p01.nsone.net.3600
NSdns3.p01.nsone.net.3600
NSdns4.p01.nsone.net.3600
A85.10.142.153600
AAAA2a01:7c8:d010:1ba:5054:ff:feda:3dc53600
MX0 zuyderland-nl.c-v1.mx.microsoft.3600
TXT"P3LbaICpOnfscTa75ehfovZkiXm8dom8po43E+GTCL9ckvQhRvzW8iJGOlR6uBhxQMsJURwyFttqkyTAVLMAXg=="3600
TXT"aMpmfUXj3Vb5nRa1hI+EMDjYhVRLslgNzW1VFBtNbUnv5mTHiQ/8VuSkuxSH1CJu4racJrFhtDOm1/UgQEOypg=="3600
TXT"5uaEYQhSljktgIsSLl6J0t1XYjOepIoe02sFevPhLkCJAZ3SUJ5e2OolE3D7FzThq2aUCIbASYqzt8npnvbAqw=="3600
TXT"brevo-code:ce43129e12864f59be53037662a8d308"3600
TXT"2c95Jsmip6OaCSPJYxYvYzE9VikshBI1bTxEjcktYtA="3600
TXT"apple-domain-verification=oXYqMkOWsALIxZij"3600
TXT"MS=ms82506428"3600
TXT"v=spf1 include:spf.zuyderland.nl.amitron.nl -all"3600
TXT"cisco-ci-domain-verification=4a91a2590a2152819a534b1eda19854328f78988134f1b0632c63a62a170a192"3600
TXT"pexip-ms-tenant-domain-verification=474e6ad2-36fd-48f4-b519-aa907555ce26"3600
TXT"ms-domain-verification=b0d7979e-05d8-4a8c-b883-d45797660e0e"3600
TXT"google-site-verification=E7e0wqTJtZWjICLWCiRY-c9Tqu59sKNWD6aSxCJG-Sw"3600
TXT"DomainVerification=CSOO4AROSORGS7HFHUJT65Z6PQ8NBDKHFDB6OLOBBDNUXXJNAAA95QVXSVQRAU63"3600
TXT"Pi3T5M233Dom16pdn8sazCE3duhv8UAarLQB3hYcrCJr3SdjwEYkzqU3NjobHCct"3600
TXT"dhJfwXf2yh0XMPuI2QSsBgFokjJm9M2DCV42asU0Mmqm8fgi3tBvaOFxAsAFKgEb" ""3600
TXT"brevo-code:aa0dcf899c88f23c7023118453402e72"3600
TXT"k7U9Hmiwegcq9xmfgQFEdymFLiwlifLXSBMBX6slxxMMRWdIAfhiYoN7ortZB5t7"3600
TXT"dVkw2wZ9BvSuAtOCwL6EaclBkVimCEuPWrkFobbKhA2z7C9d2q7RagRxRDSDbuXx"3600
TXT"TTHFI2QCFoXzJcl4pNuaeTRwtbTz3inURlnwqfGWJucq2CMWdb7xck4n6BeKjfxx"3600
TXT"mXDfNx7Fsse8fAwXXdTi0CpyVBtmFtc9Gpv9JA0S5cXSzVcvXMYCLTiiy8At2iNa"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