Domain report: tandartsennet.nl

Registration

info

.nl country-code

Found

TLD: .nl (country-code)
ICANN policies apply: no

Lookup error: https://rdap.sidn.nl/domain/tandartsennet.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/tandartsennet.nl returned HTTP 429

#3

Delegation

warn

ns1.pharmeon.nl, ns2.pharmeon.nl

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.pharmeon.nl, ns2.pharmeon.nl
NS in the zone: ns1.pharmeon.nl, ns2.pharmeon.nl

Nameserver	Addresses	Network (AS)	Glue
ns1.pharmeon.nl	89.31.58.84	AS201401 NewVM-AS - NewVM B.V., NL	89.31.58.84
ns2.pharmeon.nl	31.14.11.25	AS201401 NewVM-AS - NewVM B.V., NL	31.14.11.25

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.pharmeon.nl, ns2.pharmeon.nl.

#6
✓ 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 0 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS201401 (NewVM-AS - NewVM B.V., NL): 2 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 .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
!

No IPv6

None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.

#13

Nameservers

warn

2 of 2 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.pharmeon.nl 89.31.58.84	NOERROR, 10 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 5.0.8 (built Oct 7 2026 06:11:46 by root@localhost)
ns2.pharmeon.nl 31.14.11.25	NOERROR, 10 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 5.0.8 (built Oct 7 2026 06:11:46 by root@localhost)

Checks

✓ All respond #14

All 2 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: ns1.pharmeon.nl: "PowerDNS Authoritative Server 5.0.8 (built Oct 7 2026 06:11:46 by root@localhost)"; ns2.pharmeon.nl: "PowerDNS Authoritative Server 5.0.8 (built Oct 7 2026 06:11:46 by root@localhost)". 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.

SOA

fail

serial 2026092804 · primary ns1.pharmeon.nl

Found

Primary (MNAME): ns1.pharmeon.nl
Contact (RNAME): hostmaster\@pharmeon.nl
Serial: 2026092804
Refresh / retry: 10800 s / 3600 s
Expire: 604800 s
Negative TTL: 3600 s

Serial per nameserver

Nameserver	Serial
ns1.pharmeon.nl (89.31.58.84)	2026092804
ns2.pharmeon.nl (31.14.11.25)	2026092804

Checks

✓ Serial 2026092804 everywhere #22

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

SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
✓ Primary is a public nameserver #24

The primary nameserver ns1.pharmeon.nl is one of the listed nameservers.
✗

Invalid contact address

The SOA RNAME "hostmaster\\@pharmeon.nl" contains an @; it must be written with a dot instead (hostmaster.example.com).

#25
✓ Date-based serial #26

The serial 2026092804 follows the YYYYMMDDnn convention (2026-09-28).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC
Signatures valid until: 5 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
43374	ECDSAP256SHA256 (13)	SHA256 991C3DA54C5AEBA5…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
43374	KSK (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 43374 (SHA256).
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13).
✓ Signatures valid until 2026-11-05 #30

The earliest DNSKEY/SOA signature expires at 2026-11-05 00:00 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

5 records at the apex

Found

Read from: 89.31.58.84:53

Type	Value	TTL
SOA	ns1.pharmeon.nl. hostmaster\@pharmeon.nl. 2026092804 10800 3600 604800 3600	3600
NS	ns2.pharmeon.nl.	3600
NS	ns1.pharmeon.nl.	3600
A	89.31.58.89	3600
MX	10 muiden.iconnect.nl.	3600

Checks

✓ TTLs within range #32

TTLs: A 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