pllek.nl

alt1.rapidehosting.nl, dns01.rapidehosting.nl

Found

Parent zone

nl

Delegation from

ns1.dns.nl (194.0.28.53)

NS at the parent

alt1.rapidehosting.nl, dns01.rapidehosting.nl

NS in the zone

alt1.rapidehosting.nl, dns10.rapidehosting.nl

Checks

• i

  2 nameservers

  Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: alt1.rapidehosting.nl, dns01.rapidehosting.nl.

  #6
• !

  NS sets differ

  The nameservers at the parent and in the zone should be the same. Only at the parent: dns01.rapidehosting.nl; only in the zone: dns10.rapidehosting.nl. alt1.rapidehosting.nl, dns01.rapidehosting.nl, dns10.rapidehosting.nl report NS alt1.rapidehosting.nl dns10.rapidehosting.nl.

  #7
• !

  Glue differs from the zone

  The addresses at the parent (glue) differ from the addresses in the zone: alt1.rapidehosting.nl (glue 217.21.197.146, zone 217.21.196.187, 2a00:8080:10:101:91:208:60:99). Update the glue at your registrar.

  #8
• ✓ 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.
• ✓ 2 autonomous systems #11

  The nameservers are spread over: AS39704 (CJ2-AS - CJ2 Hosting B.V., NL): 3 addresses; AS43366 (OSSO - OSSO B.V., NL): 2 addresses.
• i

  All nameserver names under .nl

  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
• i

  Partly IPv6

  These nameservers have no IPv6 address: dns01.rapidehosting.nl.

  #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.
• !

  Software version disclosed

  These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: alt1.rapidehosting.nl: "PowerDNS Authoritative Server 4.2.1"; dns01.rapidehosting.nl: "PowerDNS Authoritative Server 4.5.3"; dns10.rapidehosting.nl: "PowerDNS Authoritative Server 4.5.3". Hide or replace the version string.

  #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 2026102202 · primary dns10.rapidehosting.nl

Found

Primary (MNAME)

dns10.rapidehosting.nl

Contact (RNAME)

hostmaster.pllek.nl

Serial

2026102202

Refresh / retry

3600 s / 3600 s

Expire

1209600 s

Negative TTL

1800 s

Serial per nameserver

Checks

• ✓ Serial 2026102202 everywhere #22

  All nameservers serve the same version of the zone.
• !

  Unusual SOA timers

  retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 14d, negative TTL 30m.

  #23
• ✓ Primary is a public nameserver #24

  The primary nameserver dns10.rapidehosting.nl is one of the listed nameservers.
• ✓ Contact hostmaster@pllek.nl #25

  The SOA RNAME hostmaster.pllek.nl means hostmaster@pllek.nl.
• ✓ Date-based serial #26

  The serial 2026102202 follows the YYYYMMDDnn convention (2026-10-22).

Not signed

Found

Validated by resolver

no

Checks

• !

  Not signed

  The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.

  #27