Domain report: valkenburg.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

pass

ns1.d-zone.ca, ns2.d-zone.ca, sec1.rcode0.net, sec2.rcode0.net

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.d-zone.ca, ns2.d-zone.ca, sec1.rcode0.net, sec2.rcode0.net
NS in the zone: ns1.d-zone.ca, ns2.d-zone.ca, sec1.rcode0.net, sec2.rcode0.net

Nameserver	Addresses	Network (AS)	Glue
ns1.d-zone.ca	162.219.54.2 2620:10a:80eb::2	AS55195 CIRA-CLOUD1 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA AS55195 CIRA-CLOUD1 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA	-
ns2.d-zone.ca	162.219.55.2 2620:10a:80ec::2	AS394354 CIRA-CLOUD2 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA AS394354 CIRA-CLOUD2 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA	-
sec1.rcode0.net	192.174.68.100 2001:67c:1bc::100	AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT	-
sec2.rcode0.net	176.97.158.100 2001:67c:10b8::100	AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT	-

Checks

✓ 4 nameservers #6

Delegated to ns1.d-zone.ca, ns2.d-zone.ca, sec1.rcode0.net, sec2.rcode0.net.
✓ 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; AS394354 (CIRA-CLOUD2 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA): 2 addresses; AS55195 (CIRA-CLOUD1 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA): 2 addresses.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .ca, .net.
✓ 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.d-zone.ca 162.219.54.2	NOERROR, 13 ms, authoritative	no	yes / yes	refused	CIRA Server
ns1.d-zone.ca 2620:10a:80eb::2	NOERROR, 13 ms, authoritative	no	yes / yes	refused	CDG D-ZONE nameserver
ns2.d-zone.ca 162.219.55.2	NOERROR, 3 ms, authoritative	no	yes / yes	refused	CIRA Server
ns2.d-zone.ca 2620:10a:80ec::2	NOERROR, 4 ms, authoritative	no	yes / yes	refused	FRA D-ZONE nameserver
sec1.rcode0.net 192.174.68.100	NOERROR, 7 ms, authoritative	no	yes / yes	refused	RcodeZero DNS
sec1.rcode0.net 2001:67c:1bc::100	NOERROR, 7 ms, authoritative	no	yes / yes	refused	RcodeZero DNS
sec2.rcode0.net 176.97.158.100	NOERROR, 12 ms, authoritative	no	yes / yes	refused	reg-wie1
sec2.rcode0.net 2001:67c:10b8::100	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.
i

Identifying string disclosed

These nameservers answer version queries with a string that is not a version number: ns1.d-zone.ca: "CIRA Server"; ns1.d-zone.ca: "CDG D-ZONE nameserver"; ns2.d-zone.ca: "CIRA Server"; ns2.d-zone.ca: "FRA D-ZONE nameserver"; sec1.rcode0.net: "RcodeZero DNS"; sec2.rcode0.net: "reg-wie1".

#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 2018036110 · primary sec1.rcode0.net

Found

Primary (MNAME): sec1.rcode0.net
Contact (RNAME): hostmaster.as38915.net
Serial: 2018036110
Refresh / retry: 43200 s / 4320 s
Expire: 2419200 s
Negative TTL: 28800 s

Serial per nameserver

Nameserver	Serial
ns1.d-zone.ca (162.219.54.2)	2018036110
ns1.d-zone.ca (2620:10a:80eb::2)	2018036110
ns2.d-zone.ca (162.219.55.2)	2018036110
ns2.d-zone.ca (2620:10a:80ec::2)	2018036110
sec1.rcode0.net (192.174.68.100)	2018036110
sec1.rcode0.net (2001:67c:1bc::100)	2018036110
sec2.rcode0.net (176.97.158.100)	2018036110
sec2.rcode0.net (2001:67c:10b8::100)	2018036110

Checks

✓ Serial 2018036110 everywhere #22

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

SOA refresh 12h, retry 72m, expire 28d, negative TTL 8h.
✓ Primary is a public nameserver #24

The primary nameserver sec1.rcode0.net is one of the listed nameservers.
✓ Contact hostmaster@as38915.net #25

The SOA RNAME hostmaster.as38915.net means hostmaster@as38915.net.
✓ Timestamp serial #26

The serial 2018036110 is a Unix timestamp (2033-12-12 21:35 UTC).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 0 iterations, 0-byte salt
Signatures valid until: 28 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
35227	ECDSAP256SHA256 (13)	SHA256 172E76A9762BA215…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
35227	KSK (257)	ECDSAP256SHA256 (13)
52522	ZSK (256)	ECDSAP256SHA256 (13)
19489	ZSK (256)	ECDSAP256SHA256 (13)
21091	ZSK (256)	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 35227 (SHA256).
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13).
!

Signatures expire soon

The earliest signature expires at 2026-10-28 20:42 UTC (in 148h0m0s). Check that automatic re-signing works.

#30
✓ NSEC3 as recommended #31

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

Records

pass

28 records at the apex

Found

Read from: 162.219.54.2:53

Type	Value	TTL
SOA	sec1.rcode0.net. hostmaster.as38915.net. 2018036110 43200 4320 2419200 28800	300
NS	ns1.d-zone.ca.	300
NS	ns2.d-zone.ca.	300
NS	sec1.rcode0.net.	300
NS	sec2.rcode0.net.	300
A	87.233.198.66	300
AAAA	2001:9a8:a6:0:87:233:198:66	300
MX	10 fm01.as38915.net.	300
MX	10 fm02.as38915.net.	300
TXT	"44296874c704c1e595eaaf049e8fa393d71cf1b4c08165ee3de0f83f61e08ee5"	300
TXT	"be4a43bb73dcc62e76d7fec4d1751936f446c72569bbbceac796cc217a0add6a"	300
TXT	"NTU1IBGnL5TDyf3zVagBnYGEre+DG/bOmHZ0gheExi+xqVobIkRskWNHywGgzm0FKn0KI/PvmCiB2HlR7sghnw=="	300
TXT	"google-site-verification=v0LiHKmSd-f42sMTNU53qIRmf0TA4VOeHN5e-5lp9zQ"	300
TXT	"v=spf1 ip4:31.160.192.178 include:_u.valkenburg.nl._spf.dmarcly.com include:spf.protection.outlook.com ~all"	300
TXT	"apple-domain-verification=17Uoiwj0eAIqzBxk"	300
TXT	"YIzPHmrWdUq6NQRC23EqV7Ia2jssl0ELZdojPuudACu7blHHXbJOpqQZ33i4v6Ic"	300
TXT	"GlcdxjmCZwaxDEbCwBlSFGVnFt8VNy7fC9iRT5ETjyYdUT4MaI55qLqmOi0lRsSC"	300
TXT	"MS=ms64107758"	300
TXT	"mUCFeeTVDIoOvmvWiQp9eVA8IrowX0C5uoJFf95NHIV8sLNzRiAxd746m2bcnwZ9"	300
TXT	"ed7fe027f472ce75ffdd89423de35c67be2fc56625f343d104b3207e569df8e1"	300
TXT	"xzrV4DjFByESxUvrNUp9x7BRfCsMw4PcsPFlzMbFWiHqQB2IzycbfBxLcTIzH0R6"	300
TXT	"02b6f21f7159b2c927dec88fbb410eb5a3b02cf5380c8aaa217776a446e382b0"	300
CAA	0 issuewild "certsign.ro"	300
CAA	0 issue "digicert.com"	300
CAA	0 issue "certsign.ro"	300
CAA	0 issue "letsencrypt.org"	300
CAA	0 issuewild "letsencrypt.org"	300
CAA	0 issuewild "digicert.com"	300

Checks

✓ TTLs within range #32

TTLs: A 5m, AAAA 5m, MX 5m, NS 5m. The NS TTL at the parent is 1h and in the zone 5m; 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: certsign.ro, digicert.com, letsencrypt.org.