Domain report: krantenbankzeeland.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

warn

ns1.hzeeland.nl, ns1.zebi.nl, ns2.surfnet.nl

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.hzeeland.nl, ns1.zebi.nl, ns2.surfnet.nl
NS in the zone: ns1.hzeeland.nl, ns1.zebi.nl, ns2.surfnet.nl, ns2.zebi.nl

Nameserver	Addresses	Network (AS)	Glue
ns1.hzeeland.nl	145.19.1.1 2001:610:300:1::1	AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL	145.19.1.1 2001:610:300:1::1
ns1.zebi.nl	192.87.78.208 2001:610:2f0:7::208	AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL	192.87.78.208 2001:610:2f0:7::208
ns2.surfnet.nl	192.87.36.2 2001:610:3:200a:192:87:36:2	AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL	192.87.36.2 2001:610:3:200a:192:87:36:2
ns2.zebi.nl (zone only)	192.87.78.209 2001:610:2f0:7::209	AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL	-

Checks

✓ 3 nameservers #6

Delegated to ns1.hzeeland.nl, ns1.zebi.nl, ns2.surfnet.nl.
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only in the zone: ns2.zebi.nl. ns1.hzeeland.nl, ns1.zebi.nl, ns2.surfnet.nl, ns2.zebi.nl report NS ns1.hzeeland.nl ns1.zebi.nl ns2.surfnet.nl ns2.zebi.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 (AS1103 (SURFNET-NL - SURF B.V., NL): 8 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 .nl

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

warn

8 of 8 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.hzeeland.nl 145.19.1.1	NOERROR, 14 ms, authoritative	no	yes / yes	refused	-
ns1.hzeeland.nl 2001:610:300:1::1	NOERROR, 14 ms, authoritative	no	yes / yes	refused	-
ns1.zebi.nl 192.87.78.208	NOERROR, 14 ms, authoritative	no	yes / yes	refused	9.18.49-1~deb12u2-Debian
ns1.zebi.nl 2001:610:2f0:7::208	NOERROR, 15 ms, authoritative	no	yes / yes	refused	9.18.49-1~deb12u2-Debian
ns2.surfnet.nl 192.87.36.2	NOERROR, 12 ms, authoritative	no	yes / yes	refused	This is a SURFnet nameserver - dns-beheer@surfnet.nl
ns2.surfnet.nl 2001:610:3:200a:192:87:36:2	NOERROR, 12 ms, authoritative	no	yes / yes	refused	This is a SURFnet nameserver - dns-beheer@surfnet.nl
ns2.zebi.nl 192.87.78.209	NOERROR, 14 ms, authoritative	no	yes / yes	refused	9.18.49-1~deb12u2-Debian
ns2.zebi.nl 2001:610:2f0:7::209	NOERROR, 14 ms, authoritative	no	yes / yes	refused	9.18.49-1~deb12u2-Debian

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: ns1.zebi.nl: "9.18.49-1~deb12u2-Debian"; ns2.zebi.nl: "9.18.49-1~deb12u2-Debian". 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 2016032697 · primary ns1.zebi.nl

Found

Primary (MNAME): ns1.zebi.nl
Contact (RNAME): hostmaster.zebi.nl
Serial: 2016032697
Refresh / retry: 3600 s / 600 s
Expire: 1209600 s
Negative TTL: 3600 s

Serial per nameserver

Nameserver	Serial
ns1.hzeeland.nl (145.19.1.1)	2016032697
ns1.hzeeland.nl (2001:610:300:1::1)	2016032697
ns1.zebi.nl (192.87.78.208)	2016032697
ns1.zebi.nl (2001:610:2f0:7::208)	2016032697
ns2.surfnet.nl (192.87.36.2)	2016032697
ns2.surfnet.nl (2001:610:3:200a:192:87:36:2)	2016032697
ns2.zebi.nl (192.87.78.209)	2016032697
ns2.zebi.nl (2001:610:2f0:7::209)	2016032697

Checks

✓ Serial 2016032697 everywhere #22

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

SOA refresh 1h, retry 10m, expire 14d, negative TTL 1h.
✓ Primary is a public nameserver #24

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

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

The serial 2016032697 follows the YYYYMMDDnn convention (2016-03-26).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 50 iterations, 8-byte salt
Signatures valid until: 26 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
13970	RSASHA256 (8)	SHA256 97248DBF01B1C998…	yes
43145	RSASHA256 (8)	SHA256 DBD0164818019D6C…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
43145	KSK (257)	RSASHA256 (8)
13970	KSK (257)	RSASHA256 (8)
59799	ZSK (256)	RSASHA256 (8)
29455	ZSK (256)	RSASHA256 (8)
63947	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 13970 (SHA256), key tag 43145 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
!

Signatures expire soon

The earliest signature expires at 2026-10-26 08:47 UTC (in 91h0m0s). Check that automatic re-signing works.

#30
!

NSEC3 with extra iterations or salt

NSEC3 uses 50 iterations and a 8-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

pass

14 records at the apex

Found

Read from: 145.19.1.1:53

Type	Value	TTL
SOA	ns1.zebi.nl. hostmaster.zebi.nl. 2016032697 3600 600 1209600 3600	3600
NS	ns2.zebi.nl.	3600
NS	ns2.surfnet.nl.	3600
NS	ns1.zebi.nl.	3600
NS	ns1.hzeeland.nl.	3600
A	192.87.78.200	3600
MX	10 mx-scan01.zebi.nl.	3600
TXT	"HARICA-qvMVRRw8fuog102s1x2"	3600
TXT	"v=spf1 mx ip4:145.116.199.0/24 ip4:192.87.78.237 ip6:2001:610:2f0:7::237 ip6:2001:610:2f0:120::/64 include:_senderspf.copernica.com include:spf.afas.online include:spf.topdesk.net include:spf.crowdtech.com include:spf.bibliotheek.nl -all"	3600
CAA	0 iodef "mailto:hostmaster@zebi.nl"	3600
CAA	0 issue "digicert.com"	3600
CAA	0 issue "sectigo.com"	3600
CAA	0 issue "letsencrypt.org"	3600
CAA	0 issue "harica.gr"	3600

Checks

✓ TTLs within range #32

TTLs: A 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.
✓ CAA restricts issuance #35

Certificates may be issued by: digicert.com, sectigo.com, letsencrypt.org, harica.gr.