Domain report: nlnet.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

pass

anyns.pch.net, ns.nlnetlabs.nl, ns1.sidn.nl, ns2.sidn.nl

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: anyns.pch.net, ns.nlnetlabs.nl, ns1.sidn.nl, ns2.sidn.nl
NS in the zone: anyns.pch.net, ns.nlnetlabs.nl, ns1.sidn.nl, ns2.sidn.nl

Nameserver	Addresses	Network (AS)	Glue
anyns.pch.net	204.61.216.4 2001:500:14:6004:ad::1	AS42 WOODYNET-1 - WoodyNet, Inc., US AS42 WOODYNET-1 - WoodyNet, Inc., US	-
ns.nlnetlabs.nl	185.49.140.60 2a04:b900::8:0:0:60	AS8587 Infracom-AS - Infracom Holding B.V., NL AS8587 Infracom-AS - Infracom Holding B.V., NL	185.49.140.60 2a04:b900::8:0:0:60
ns1.sidn.nl	192.174.68.144 2001:67c:1bc::144	AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT	192.174.68.144 2001:67c:1bc::144
ns2.sidn.nl	176.97.158.144 2001:67c:10b8::144	AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT	176.97.158.144 2001:67c:10b8::144

Checks

✓ 4 nameservers #6

Delegated to anyns.pch.net, ns.nlnetlabs.nl, ns1.sidn.nl, ns2.sidn.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 4 IPv4 /24s and 4 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 4 addresses; AS42 (WOODYNET-1 - WoodyNet, Inc., US): 2 addresses; AS8587 (Infracom-AS - Infracom Holding B.V., NL): 2 addresses.
✓ Nameserver names under 2 TLDs #12

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

Every nameserver has an IPv6 address.

Nameservers

warn

8 of 8 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
anyns.pch.net 204.61.216.4	NOERROR, 20 ms, authoritative	no	yes / yes	refused	host
anyns.pch.net 2001:500:14:6004:ad::1	NOERROR, 20 ms, authoritative	no	yes / yes	refused	host
ns.nlnetlabs.nl 185.49.140.60	NOERROR, 12 ms, authoritative	no	yes / yes	refused	NSD 4.3.8
ns.nlnetlabs.nl 2a04:b900::8:0:0:60	NOERROR, 10 ms, authoritative	no	yes / yes	refused	NSD 4.3.8
ns1.sidn.nl 192.174.68.144	NOERROR, 8 ms, authoritative	no	yes / yes	refused	RcodeZero DNS
ns1.sidn.nl 2001:67c:1bc::144	NOERROR, 8 ms, authoritative	no	yes / yes	refused	RcodeZero DNS
ns2.sidn.nl 176.97.158.144	NOERROR, 12 ms, authoritative	no	yes / yes	refused	reg-wie1
ns2.sidn.nl 2001:67c:10b8::144	NOERROR, 12 ms, authoritative	no	yes / yes	refused	reg-wie1

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.
!

Software version disclosed

These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns.nlnetlabs.nl: "NSD 4.3.8". 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

pass

serial 2026101304 · primary ns.nlnetlabs.nl

Found

Primary (MNAME): ns.nlnetlabs.nl
Contact (RNAME): webmaster.nlnet.nl
Serial: 2026101304
Refresh / retry: 28800 s / 7200 s
Expire: 604800 s
Negative TTL: 3600 s

Serial per nameserver

Nameserver	Serial
anyns.pch.net (204.61.216.4)	2026101304
anyns.pch.net (2001:500:14:6004:ad::1)	2026101304
ns.nlnetlabs.nl (185.49.140.60)	2026101304
ns.nlnetlabs.nl (2a04:b900::8:0:0:60)	2026101304
ns1.sidn.nl (192.174.68.144)	2026101304
ns1.sidn.nl (2001:67c:1bc::144)	2026101304
ns2.sidn.nl (176.97.158.144)	2026101304
ns2.sidn.nl (2001:67c:10b8::144)	2026101304

Checks

✓ Serial 2026101304 everywhere #22

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

SOA refresh 8h, retry 2h, expire 7d, negative TTL 1h.
✓ Primary is a public nameserver #24

The primary nameserver ns.nlnetlabs.nl is one of the listed nameservers.
✓ Contact webmaster@nlnet.nl #25

The SOA RNAME webmaster.nlnet.nl means webmaster@nlnet.nl.
✓ Date-based serial #26

The serial 2026101304 follows the YYYYMMDDnn convention (2026-10-13).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC
Signatures valid until: 12 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
19987	RSASHA256 (8)	SHA256 A7604BF8EE55A777…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
38979	ZSK (256)	RSASHA256 (8)
19987	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 19987 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-12 #30

The earliest DNSKEY/SOA signature expires at 2026-11-12 12:38 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

10 records at the apex

Found

Read from: 204.61.216.4:53

Type	Value	TTL
SOA	ns.nlnetlabs.nl. webmaster.nlnet.nl. 2026101304 28800 7200 604800 3600	3600
NS	ns1.sidn.nl.	3600
NS	ns2.sidn.nl.	3600
NS	anyns.pch.net.	3600
NS	ns.nlnetlabs.nl.	3600
A	5.255.103.93	3600
AAAA	2a04:52c0:108:b1af::cafe	3600
MX	20 open.nlnet.nl.	3600
TXT	"v=spf1 ip4:145.220.53.132/32 ip6:2001:67c:6ec:253:145:220:53:132/128 -all"	3600
TXT	"Stichting NLnet"	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.
✓ 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