amersfoort.nl

Checked 21 October 2026, 20:45 UTC · via 8.8.8.8
iAll checks passed
31 passed 0 warnings 0 failed 4 info

Registration

info

.nl country-code · RegistrarHub

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
RegistrarHub
Registered
17 April 1996
Last changed
2 August 2024
Status
active
Registry nameservers
ns1.cobytes.io, ns2.cobytes.com, ns3.cobytes.eu
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

pass

ns1.cobytes.io, ns2.cobytes.com, ns3.cobytes.eu

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.cobytes.io, ns2.cobytes.com, ns3.cobytes.eu
NS in the zone
ns1.cobytes.io, ns2.cobytes.com, ns3.cobytes.eu
NameserverAddressesNetwork (AS)Glue
ns1.cobytes.io185.71.62.53 2a03:38a0:62:53::1AS201191 COBYTES - Cobytes B.V., NL AS201191 COBYTES - Cobytes B.V., NL-
ns2.cobytes.com5.75.236.16 2a01:4f8:c012:7d6b::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
ns3.cobytes.eu193.111.32.53 2a0f:8cc0:0:32:53::1AS211895 Serverius-Users-as - Serverius Holding B.V., NL AS211895 Serverius-Users-as - Serverius Holding B.V., NL-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.cobytes.io, ns2.cobytes.com, ns3.cobytes.eu.
  • ✓ 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 3 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS201191 (COBYTES - Cobytes B.V., NL): 2 addresses; AS211895 (Serverius-Users-as - Serverius Holding B.V., NL): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 addresses.
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .com, .eu, .io.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.cobytes.io 185.71.62.53NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns1.cobytes.io 2a03:38a0:62:53::1NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns2.cobytes.com 5.75.236.16NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns2.cobytes.com 2a01:4f8:c012:7d6b::1NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns3.cobytes.eu 193.111.32.53NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns3.cobytes.eu 2a0f:8cc0:0:32:53::1NOERROR, 11 ms, authoritativenoyes / yesrefused-

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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 2026102101 · primary ns1.cobytes.io

Found

Primary (MNAME)
ns1.cobytes.io
Contact (RNAME)
hostmaster.cobytes.io
Serial
2026102101
Refresh / retry
14400 s / 3600 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.cobytes.io (185.71.62.53)2026102101
ns1.cobytes.io (2a03:38a0:62:53::1)2026102101
ns2.cobytes.com (5.75.236.16)2026102101
ns2.cobytes.com (2a01:4f8:c012:7d6b::1)2026102101
ns3.cobytes.eu (193.111.32.53)2026102101
ns3.cobytes.eu (2a0f:8cc0:0:32:53::1)2026102101

Checks

  • ✓ Serial 2026102101 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.cobytes.io is one of the listed nameservers.
  • ✓ Contact hostmaster@cobytes.io #25
    The SOA RNAME hostmaster.cobytes.io means hostmaster@cobytes.io.
  • ✓ Date-based serial #26
    The serial 2026102101 follows the YYYYMMDDnn convention (2026-10-21).

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
29 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
50947ECDSAP256SHA256 (13)SHA256 B79AEA2A5D37F32F…yes

DNSKEY in the zone

Key tagRoleAlgorithm
50947KSK (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 50947 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-10-29 #30
    The earliest DNSKEY/SOA signature expires at 2026-10-29 00:00 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

info

21 records at the apex

Found

Read from
185.71.62.53:53
TypeValueTTL
SOAns1.cobytes.io. hostmaster.cobytes.io. 2026102101 14400 3600 1209600 8640054670
NSns2.cobytes.com.300
NSns3.cobytes.eu.300
NSns1.cobytes.io.300
A185.135.13.16300
AAAA2a06:efc0:0:103::16300
MX30 mail1.amersfoort.nl.300
MX50 mail.amersfoort.nl.300
MX30 mail2.amersfoort.nl.300
TXT"apple-domain-verification=WpEXKCOijQqZ3C8x"300
TXT"google-site-verification=nv1s0c6EfBMO8NY2Jot0rjC_zTTuQZAvJz1HwrTTsuc"300
TXT"MS=ms38256917"300
TXT"QuoVadis=ff58e443-2a03-4a74-8797-142158713d11"300
TXT"QuoVadis=a5d30343-3e71-4f12-9b87-cc0b3e08754d"300
TXT"v=spf1 include:spf.protection.outlook.com include:1.spf.amersfoort.nl include:2.spf.amersfoort.nl include:3.spf.amersfoort.nl include:4.spf.amersfoort.nl include:5.spf.amersfoort.nl include:6.spf.amersfoort.nl include:_spf.axxerion.com -all"300
TXT"QuoVadis=3dff1dac-0d36-420e-81d2-addb84213220"300
TXT"f5960df1-0b4e-4b91-8d51-258b041a5703-20082018"300
TXT"e1f6e3ff8c7efb26ff4e209b853ff05df276d0a67428b4e30d1cf7a351fd9586"300
TXT"DomainVerification=TFDDHY3DA0V3MJIQURX4IWOFTK5QX7Z20MQLJKYROUVL3GNO6IQY7VJQREEI3MLS"300
TXT"AkRRTbMW3GUt5YML3ycJ3qdeFlmCQL5vuG83QRQULnwtlQYwr77xNjPaqij44NidK7UrN3QjDDQQpuqHr89wGw=="300
TXT"aanmelder.nl-user=68470"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, NS 5m. The NS TTL at the parent is 1h and in the zone 5m; resolvers may use either.
  • ✓ 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