Domain report: nioz.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

pass

ns1.as41887.nl, ns2.as41887.eu, ns3.as41887.io, ns4.as41887.it

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.as41887.nl, ns2.as41887.eu, ns3.as41887.io, ns4.as41887.it
NS in the zone: ns1.as41887.nl, ns2.as41887.eu, ns3.as41887.io, ns4.as41887.it

Nameserver	Addresses	Network (AS)	Glue
ns1.as41887.nl	94.228.129.129 2a00:d00:ff:129:94:228:129:129	AS41887 PROLOCATION - Prolocation B.V., NL AS41887 PROLOCATION - Prolocation B.V., NL	94.228.129.129 2a00:d00:ff:129:94:228:129:129
ns2.as41887.eu	65.108.92.144 2a01:4f9:c012:6c08::1	AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE	-
ns3.as41887.io	165.227.154.158 2a03:b0c0:3:d0::50d:6001	AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US	-
ns4.as41887.it	94.228.142.168 2a00:d01:ff:905:94:228:142:168	AS41887 PROLOCATION - Prolocation B.V., NL AS41887 PROLOCATION - Prolocation B.V., NL	-

Checks

✓ 4 nameservers #6

Delegated to ns1.as41887.nl, ns2.as41887.eu, ns3.as41887.io, ns4.as41887.it.
✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS14061 (DIGITALOCEAN-ASN - DigitalOcean, LLC, US): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 addresses; AS41887 (PROLOCATION - Prolocation B.V., NL): 4 addresses.
✓ Nameserver names under 4 TLDs #12

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

Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.as41887.nl 94.228.129.129	NOERROR, 10 ms, authoritative	no	yes / yes	refused	Not disclosed - unix@prolocation.net
ns1.as41887.nl 2a00:d00:ff:129:94:228:129:129	NOERROR, 10 ms, authoritative	no	yes / yes	refused	Not disclosed - unix@prolocation.net
ns2.as41887.eu 65.108.92.144	NOERROR, 24 ms, authoritative	no	yes / yes	refused	Not disclosed - unix@prolocation.net
ns2.as41887.eu 2a01:4f9:c012:6c08::1	NOERROR, 24 ms, authoritative	no	yes / yes	refused	Not disclosed - unix@prolocation.net
ns3.as41887.io 165.227.154.158	NOERROR, 5 ms, authoritative	no	yes / yes	refused	Not disclosed - unix@prolocation.net
ns3.as41887.io 2a03:b0c0:3:d0::50d:6001	NOERROR, 5 ms, authoritative	no	yes / yes	refused	Not disclosed - unix@prolocation.net
ns4.as41887.it 94.228.142.168	NOERROR, 10 ms, authoritative	no	yes / yes	refused	Not disclosed - unix@prolocation.net
ns4.as41887.it 2a00:d01:ff:905:94:228:142:168	NOERROR, 11 ms, authoritative	no	yes / yes	refused	Not disclosed - unix@prolocation.net

Checks

✓ All respond #14

All 8 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: ns1.as41887.nl: "Not disclosed - unix@prolocation.net"; ns2.as41887.eu: "Not disclosed - unix@prolocation.net"; ns3.as41887.io: "Not disclosed - unix@prolocation.net"; ns4.as41887.it: "Not disclosed - unix@prolocation.net".

#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 2026102102 · primary ns1.as41887.nl

Found

Primary (MNAME): ns1.as41887.nl
Contact (RNAME): hostmaster.surfnet.nl
Serial: 2026102102
Refresh / retry: 14400 s / 7200 s
Expire: 1209600 s
Negative TTL: 86400 s

Serial per nameserver

Nameserver	Serial
ns1.as41887.nl (94.228.129.129)	2026102102
ns1.as41887.nl (2a00:d00:ff:129:94:228:129:129)	2026102102
ns2.as41887.eu (65.108.92.144)	2026102102
ns2.as41887.eu (2a01:4f9:c012:6c08::1)	2026102102
ns3.as41887.io (165.227.154.158)	2026102102
ns3.as41887.io (2a03:b0c0:3:d0::50d:6001)	2026102102
ns4.as41887.it (94.228.142.168)	2026102102
ns4.as41887.it (2a00:d01:ff:905:94:228:142:168)	2026102102

Checks

✓ Serial 2026102102 everywhere #22

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

SOA refresh 4h, retry 2h, expire 14d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver ns1.as41887.nl is one of the listed nameservers.
✓ Contact hostmaster@surfnet.nl #25

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

The serial 2026102102 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 tag	Algorithm	Digest	Matches a key
59618	ECDSAP256SHA256 (13)	SHA256 BCD5B0220EB52B6B…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
59618	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 59618 (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

pass

22 records at the apex

Found

Read from: 94.228.129.129:53

Type	Value	TTL
SOA	ns1.as41887.nl. hostmaster.surfnet.nl. 2026102102 14400 7200 1209600 86400	14400
NS	ns3.as41887.io.	14400
NS	ns2.as41887.eu.	14400
NS	ns1.as41887.nl.	14400
NS	ns4.as41887.it.	14400
A	145.1.115.86	14400
AAAA	2001:610:4a8:115::86	14400
MX	0 nioz-nl.mail.protection.outlook.com.	3600
TXT	"DomainVerification=679EW3HSBWBLSSD5FFKBLROUXVBN24651EOUZ4AWAG3X0YKL28OEQ6E7KVGD7OGY"	360
TXT	"apple-domain-verification=PSSuEiEWzWoULmAw"	360
TXT	"7752940d-6d13-4740-a8fc-abc69d54695a"	360
TXT	"v=spf1 include:spf.protection.outlook.com include:spf.EU.exclaimer.net a:dataverse1-dmz.nioz.nl a:mailer.nioz.nl ~all"	360
TXT	"docusign=973386ea-bac2-47d6-ac65-f239d6b66a79"	360
TXT	"google-site-verification=4_krJ6elsYUn3eXB_YRL3P0926d4GOD9UZKTfqCWLuw"	360
TXT	"DomainVerification=22VXPI4VM94J3I2J5VPLLWGC32UPSJ1C915E7M4J07RUNIBPDGVPO1TOQ9XIHL85"	360
TXT	"HARICA-Y7uI72PWnB4h7l5pbDz"	360
TXT	"anthropic-domain-verification-rf0m0j=Vr8ilN8vOCUNFOLX6WAGMD3VH"	360
TXT	"MS=ms49975448"	360
TXT	"h85EvGiJFW1lrFRnkDyGvw2hH2ny+Fj5cgt6SM3+tnYuWxW6FEyhmJHtE5YG/keAh5nFzJ6JgORUQhdb8KBxSA=="	360
CAA	0 issue "harica.gr"	14400
CAA	0 issuewild "harica.gr"	14400
CAA	0 iodef "mailto:Jan.Derksen@nioz.nl"	14400

Checks

✓ TTLs within range #32

TTLs: A 4h, AAAA 4h, MX 1h, NS 4h. The NS TTL at the parent is 1h and in the zone 4h; 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.
✓ CAA restricts issuance #35

Certificates may be issued by: harica.gr.