Domain report: kinderboekenweek.nl

Registration

info

.nl country-code · Internationale Domeinregistratie Nederland

Found

TLD: .nl (country-code)
ICANN policies apply: no
Registrar: Internationale Domeinregistratie Nederland
Registered: 8 December 1998
Last changed: 8 November 2024
Status: active
Registry nameservers: nsauth1.ixlhosting.nl, nsauth2.ixlhosting.nl, nsauth3.ixl.nu
RDAP server: https://rdap.sidn.nl/

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

Expiry date not published

The registry does not publish the expiry date in RDAP. Check it with your registrar.

#3
i

No transfer lock

The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.

#4
✓ Registry and delegation match #5

The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

nsauth1.ixlhosting.nl, nsauth2.ixlhosting.nl, nsauth3.ixl.nu

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: nsauth1.ixlhosting.nl, nsauth2.ixlhosting.nl, nsauth3.ixl.nu
NS in the zone: ns1.whih.nl, ns2.whih.nl

Nameserver	Addresses	Network (AS)	Glue
ns1.whih.nl (zone only)	5.61.248.164 2a01:7860::db:1152:a:1	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	-
ns2.whih.nl (zone only)	93.119.13.218 2a01:7c8:bb09:15e:5054:ff:fed2:6901	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	-
nsauth1.ixlhosting.nl (parent only)	5.61.248.164 2a01:7860::db:1152:a:1	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	5.61.248.164 2a01:7860::db:1152:a:1
nsauth2.ixlhosting.nl (parent only)	93.119.13.218 2a01:7c8:bb09:15e:5054:ff:fed2:6901	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	93.119.13.218 2a01:7c8:bb09:15e:5054:ff:fed2:6901
nsauth3.ixl.nu (parent only)	136.144.249.197 2a01:7c8:d007:3a2:5054:ff:fe68:e003	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	-

Checks

✓ 3 nameservers #6

Delegated to nsauth1.ixlhosting.nl, nsauth2.ixlhosting.nl, nsauth3.ixl.nu.
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only at the parent: nsauth1.ixlhosting.nl, nsauth2.ixlhosting.nl, nsauth3.ixl.nu; only in the zone: ns1.whih.nl, ns2.whih.nl. ns1.whih.nl, ns2.whih.nl, nsauth1.ixlhosting.nl, nsauth2.ixlhosting.nl, nsauth3.ixl.nu report NS ns1.whih.nl ns2.whih.nl.

#7
✓ 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 3 IPv4 /24s and 3 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS20857 (TRANSIP-AS - Signet B.V., NL): 10 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
✓ Nameserver names under 2 TLDs #12

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

Every nameserver has an IPv6 address.

Nameservers

info

10 of 10 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.whih.nl 5.61.248.164	NOERROR, 10 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
ns1.whih.nl 2a01:7860::db:1152:a:1	NOERROR, 11 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
ns2.whih.nl 93.119.13.218	NOERROR, 11 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
ns2.whih.nl 2a01:7c8:bb09:15e:5054:ff:fed2:6901	NOERROR, 12 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
nsauth1.ixlhosting.nl 5.61.248.164	NOERROR, 11 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
nsauth1.ixlhosting.nl 2a01:7860::db:1152:a:1	NOERROR, 12 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
nsauth2.ixlhosting.nl 93.119.13.218	NOERROR, 11 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
nsauth2.ixlhosting.nl 2a01:7c8:bb09:15e:5054:ff:fed2:6901	NOERROR, 13 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
nsauth3.ixl.nu 136.144.249.197	NOERROR, 15 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
nsauth3.ixl.nu 2a01:7c8:d007:3a2:5054:ff:fe68:e003	NOERROR, 16 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/

Checks

✓ All respond #14

All 10 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.whih.nl: "Served by PowerDNS - https://www.powerdns.com/"; ns2.whih.nl: "Served by PowerDNS - https://www.powerdns.com/"; nsauth1.ixlhosting.nl: "Served by PowerDNS - https://www.powerdns.com/"; nsauth2.ixlhosting.nl: "Served by PowerDNS - https://www.powerdns.com/"; nsauth3.ixl.nu: "Served by PowerDNS - https://www.powerdns.com/".

#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 2026100205 · primary ns1.whih.nl

Found

Primary (MNAME): ns1.whih.nl
Contact (RNAME): hostmaster.kinderboekenweek.nl
Serial: 2026100205
Refresh / retry: 28800 s / 3600 s
Expire: 1209600 s
Negative TTL: 1800 s

Serial per nameserver

Nameserver	Serial
ns1.whih.nl (5.61.248.164)	2026100205
ns1.whih.nl (2a01:7860::db:1152:a:1)	2026100205
ns2.whih.nl (93.119.13.218)	2026100205
ns2.whih.nl (2a01:7c8:bb09:15e:5054:ff:fed2:6901)	2026100205
nsauth1.ixlhosting.nl (5.61.248.164)	2026100205
nsauth1.ixlhosting.nl (2a01:7860::db:1152:a:1)	2026100205
nsauth2.ixlhosting.nl (93.119.13.218)	2026100205
nsauth2.ixlhosting.nl (2a01:7c8:bb09:15e:5054:ff:fed2:6901)	2026100205
nsauth3.ixl.nu (136.144.249.197)	2026100205
nsauth3.ixl.nu (2a01:7c8:d007:3a2:5054:ff:fe68:e003)	2026100205

Checks

✓ Serial 2026100205 everywhere #22

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

SOA refresh 8h, retry 1h, expire 14d, negative TTL 30m.
✓ Primary is a public nameserver #24

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

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

The serial 2026100205 follows the YYYYMMDDnn convention (2026-10-02).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 1 iterations, 2-byte salt
Signatures valid until: 5 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
63467	ECDSAP256SHA256 (13)	SHA256 92F5F024626AE43C…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
63467	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 63467 (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.
!

NSEC3 with extra iterations or salt

NSEC3 uses 1 iteration and a 2-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.

#31

Records

info

7 records at the apex

Found

Read from: 5.61.248.164:53

Type	Value	TTL
SOA	ns1.whih.nl. hostmaster.kinderboekenweek.nl. 2026100205 28800 3600 1209600 1800	3600
NS	ns1.whih.nl.	3600
NS	ns2.whih.nl.	3600
A	93.119.11.149	3600
AAAA	2a01:7c8:d010:ad:5054:ff:fe17:1ae3	3600
MX	10 mail.kinderboekenweek.nl.	3600
TXT	"v=spf1 a mx include:spf.whih.nl ip4:93.119.11.149 ~all"	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