Domain report: joop.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

pass

ns1.npohosting.nl, ns2.npohosting.eu, ns3.npohosting.nl

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.npohosting.nl, ns2.npohosting.eu, ns3.npohosting.nl
NS in the zone: ns1.npohosting.nl, ns2.npohosting.eu, ns3.npohosting.nl

Nameserver	Addresses	Network (AS)	Glue
ns1.npohosting.nl	63.32.16.218 2a05:d018:ccc:da02::2:53	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns2.npohosting.eu	145.58.30.126 2a02:458:101:30::7e	AS25182 PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL AS25182 PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL	-
ns3.npohosting.nl	145.58.30.129 2a02:458:101:30::81	AS25182 PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL AS25182 PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL	-

Checks

✓ 3 nameservers #6

Delegated to ns1.npohosting.nl, ns2.npohosting.eu, ns3.npohosting.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 2 IPv4 /24s and 2 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS16509 (AMAZON-02 - Amazon.com, Inc., US): 2 addresses; AS25182 (PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL): 4 addresses.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .eu, .nl.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

fail

5 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.npohosting.nl 63.32.16.218	NOERROR, 27 ms, authoritative	no	yes / yes	refused	Nameservices operated by NPO
ns1.npohosting.nl 2a05:d018:ccc:da02::2:53	NOERROR, 27 ms, authoritative	no	yes / yes	refused	Nameservices operated by NPO
ns2.npohosting.eu 145.58.30.126	NOERROR, 10 ms, authoritative	no	yes / yes	refused	Nameservices operated by NPO
ns2.npohosting.eu 2a02:458:101:30::7e	NOERROR, 11 ms, authoritative	no	yes / yes	refused	Nameservices operated by NPO
ns3.npohosting.nl 145.58.30.129	NOERROR, 10 ms, authoritative	no	yes / yes	refused	Nameservices operated by NPO
ns3.npohosting.nl 2a02:458:101:30::81	no response	no	no / no	-	-

Checks

✗

Nameservers not responding

These addresses did not answer, so resolvers waste time on timeouts: ns3.npohosting.nl (2a02:458:101:30::81): read udp [2a01:4f8:1c1c:eebf::1]:35323->[2a02:458:101:30::81]:53: i/o timeout.

#14
✓ 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: ns1.npohosting.nl: "Nameservices operated by NPO"; ns2.npohosting.eu: "Nameservices operated by NPO"; ns3.npohosting.nl: "Nameservices operated by NPO".

#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 2026100572 · primary ns1.npohosting.nl

Found

Primary (MNAME): ns1.npohosting.nl
Contact (RNAME): hostmaster.omroep.nl
Serial: 2026100572
Refresh / retry: 14400 s / 7200 s
Expire: 604800 s
Negative TTL: 300 s

Serial per nameserver

Nameserver	Serial
ns1.npohosting.nl (63.32.16.218)	2026100572
ns1.npohosting.nl (2a05:d018:ccc:da02::2:53)	2026100572
ns2.npohosting.eu (145.58.30.126)	2026100572
ns2.npohosting.eu (2a02:458:101:30::7e)	2026100572
ns3.npohosting.nl (145.58.30.129)	2026100572

Checks

✓ Serial 2026100572 everywhere #22

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

SOA refresh 4h, retry 2h, expire 7d, negative TTL 5m.
✓ Primary is a public nameserver #24

The primary nameserver ns1.npohosting.nl is one of the listed nameservers.
✓ Contact hostmaster@omroep.nl #25

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

The serial 2026100572 follows the YYYYMMDDnn convention (2026-10-05).

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
34589	ECDSAP256SHA256 (13)	SHA256 CB88EAF495B52278…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
34589	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 34589 (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

14 records at the apex

Found

Read from: 63.32.16.218:53

Type	Value	TTL
SOA	ns1.npohosting.nl. hostmaster.omroep.nl. 2026100572 14400 7200 604800 300	7200
NS	ns1.npohosting.nl.	7200
NS	ns2.npohosting.eu.	7200
NS	ns3.npohosting.nl.	7200
A	34.253.252.36	7200
A	52.213.123.71	7200
A	34.252.104.60	7200
AAAA	2a05:d018:1622:4002:181a:b96e:548a:e2a2	7200
AAAA	2a05:d018:1622:4001:5640:8ea:6b82:7619	7200
AAAA	2a05:d018:1622:4003:52c2:619f:7764:5193	7200
MX	64 mx3.mail.omroep.nl.	7200
MX	32 mx0.mail.omroep.nl.	7200
MX	32 mx2.mail.omroep.nl.	7200
MX	32 mx1.mail.omroep.nl.	7200

Checks

✓ TTLs within range #32

TTLs: A 2h, AAAA 2h, MX 2h, NS 2h. The NS TTL at the parent is 1h and in the zone 2h; 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