vdx.nl

.nl country-code

Found

TLD

.nl (country-code)

ICANN policies apply

no

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/vdx.nl returned HTTP 429

  #3

nsauth.dn-s.be, nsauth.dn-s.eu, nsauth.dn-s.nl

Found

Parent zone

nl

Delegation from

ns1.dns.nl (194.0.28.53)

NS at the parent

nsauth.dn-s.be, nsauth.dn-s.eu, nsauth.dn-s.nl

NS in the zone

nsauth.dn-s.be, nsauth.dn-s.eu, nsauth.dn-s.nl

Checks

• ✓ 3 nameservers #6

  Delegated to nsauth.dn-s.be, nsauth.dn-s.eu, nsauth.dn-s.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 3 IPv4 /24s and 2 IPv6 /48s.
• ✓ 2 autonomous systems #11

  The nameservers are spread over: AS14061 (DIGITALOCEAN-ASN - DigitalOcean, LLC, US): 3 addresses; AS206281 (AS-ZXCS - Stichting DIGI NL, NL): 2 addresses.
• ✓ Nameserver names under 3 TLDs #12

  Nameserver names use the TLDs .be, .eu, .nl.
• i

  Partly IPv6

  These nameservers have no IPv6 address: nsauth.dn-s.be.

  #13

5 of 5 addresses answer authoritatively

Found

Checks

• ✓ All respond #14

  All 5 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: nsauth.dn-s.be: "Unknown"; nsauth.dn-s.eu: "Unknown"; nsauth.dn-s.nl: "Unknown".

  #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.

serial 2026072201 · primary ns1.dn-s.nl

Found

Primary (MNAME)

ns1.dn-s.nl

Contact (RNAME)

nic.virtualregistrar.nl

Serial

2026072201

Refresh / retry

28800 s / 3600 s

Expire

1209600 s

Negative TTL

3600 s

Serial per nameserver

Checks

• ✓ Serial 2026072201 everywhere #22

  All nameservers serve the same version of the zone.
• ✓ Timers within recommendations #23

  SOA refresh 8h, retry 1h, expire 14d, negative TTL 1h.
• i

  Hidden master

  The primary nameserver ns1.dn-s.nl is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.

  #24
• ✓ Contact nic@virtualregistrar.nl #25

  The SOA RNAME nic.virtualregistrar.nl means nic@virtualregistrar.nl.
• ✓ Date-based serial #26

  The serial 2026072201 follows the YYYYMMDDnn convention (2026-07-22).

11 records at the apex

Found

Read from

138.68.125.166:53

Checks

• ✓ TTLs within range #32

  TTLs: A 31m26s, AAAA 1h, MX 1h, NS 1h.
• ✓ 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