Domain report: oisd.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

info

dns102.ovh.net, ns102.ovh.net

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: dns102.ovh.net, ns102.ovh.net
NS in the zone: dns102.ovh.net, ns102.ovh.net

Nameserver	Addresses	Network (AS)	Glue
dns102.ovh.net	5.196.38.181 2001:41d0:d00:fc00::2	AS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR	-
ns102.ovh.net	5.135.54.1 2001:41d0:b00:f600::2	AS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR	-

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns102.ovh.net, ns102.ovh.net.

#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 2 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS16276 (OVH - OVH SAS, FR): 4 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 .net

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
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

pass

4 of 4 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns102.ovh.net 5.196.38.181	NOERROR, 18 ms, authoritative	no	yes / yes	refused	-
dns102.ovh.net 2001:41d0:d00:fc00::2	NOERROR, 17 ms, authoritative	no	yes / yes	refused	-
ns102.ovh.net 5.135.54.1	NOERROR, 15 ms, authoritative	no	yes / yes	refused	-
ns102.ovh.net 2001:41d0:b00:f600::2	NOERROR, 15 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 4 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.
✓ No version disclosed #17

The nameservers don't reveal their software version.
✓ 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

warn

serial 2092603871 · primary dns102.ovh.net

Found

Primary (MNAME): dns102.ovh.net
Contact (RNAME): tech.ovh.net
Serial: 2092603871
Refresh / retry: 86400 s / 3600 s
Expire: 3600000 s
Negative TTL: 60 s

Serial per nameserver

Nameserver	Serial
dns102.ovh.net (5.196.38.181)	2092603871
dns102.ovh.net (2001:41d0:d00:fc00::2)	2092603871
ns102.ovh.net (5.135.54.1)	2092603871
ns102.ovh.net (2001:41d0:b00:f600::2)	2092603871

Checks

✓ Serial 2092603871 everywhere #22

All nameservers serve the same version of the zone.
!

Unusual SOA timers

negative caching TTL (minimum) 1m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1d, retry 1h, expire 1000h, negative TTL 1m.

#23
✓ Primary is a public nameserver #24

The primary nameserver dns102.ovh.net is one of the listed nameservers.
✓ Contact tech@ovh.net #25

The SOA RNAME tech.ovh.net means tech@ovh.net.
✓ Timestamp serial #26

The serial 2092603871 is a Unix timestamp (2036-04-23 22:51 UTC).

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: 20 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
4426	RSASHA256 (8)	SHA256 33EB4556BB6B1D11…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
23854	ZSK (256)	RSASHA256 (8)
27184	ZSK (256)	RSASHA256 (8)
4426	KSK (257)	RSASHA256 (8)

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 4426 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-20 #30

The earliest DNSKEY/SOA signature expires at 2026-11-20 16:31 UTC.
✓ NSEC3 as recommended #31

The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

info

11 records at the apex

Found

Read from: 5.196.38.181:53

Type	Value	TTL
SOA	dns102.ovh.net. tech.ovh.net. 2092603871 86400 3600 3600000 60	3600
NS	ns102.ovh.net.	3600
NS	dns102.ovh.net.	3600
A	57.128.255.167	3600
AAAA	2001:41d0:601:1100::8a86	3600
MX	20 eu2-smtp.messagingengine.com.	3600
MX	10 eu1-smtp.messagingengine.com.	3600
TXT	"v=spf1 include:spf.messagingengine.com -all"	3600
TXT	"google-site-verification=gaC_Y8bt4BQs3FzW5nBVHp3z3z37p0jkjFdHo6g056k"	3600
CAA	0 issue "letsencrypt.org"	3600
CAA	0 issuewild "letsencrypt.org"	3600

Checks

✓ TTLs within range #32

TTLs: A 1h, 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
✓ CAA restricts issuance #35

Certificates may be issued by: letsencrypt.org.