Domain report: kerkomroep.nl

Registration

info

.nl country-code · Communications Security Net B.V.

Found

TLD: .nl (country-code)
ICANN policies apply: no
Registrar: Communications Security Net B.V.
Registered: 5 April 2000
Last changed: 25 September 2026
Status: active
Registry nameservers: ns1.csnet.nl, ns2.csnet.nl
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

ns1.csnet.nl, ns2.csnet.nl

Found

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

Nameserver	Addresses	Network (AS)	Glue
ns1.csnet.nl	194.69.16.18	AS48886 CSNet-AS - Communications Security Net B.V., NL	194.69.16.18
ns2.csnet.nl	194.69.18.18	AS48886 CSNet-AS - Communications Security Net B.V., NL	194.69.18.18

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.csnet.nl, ns2.csnet.nl.

#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 0 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS48886 (CSNet-AS - Communications Security Net B.V., NL): 2 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
!

No IPv6

None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.

#13

Nameservers

pass

2 of 2 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.csnet.nl 194.69.16.18	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-
ns2.csnet.nl 194.69.18.18	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 2 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

pass

serial 2026092505 · primary ns1.csnet.nl

Found

Primary (MNAME): ns1.csnet.nl
Contact (RNAME): hostmaster.csnet.nl
Serial: 2026092505
Refresh / retry: 28800 s / 7200 s
Expire: 1209600 s
Negative TTL: 300 s

Serial per nameserver

Nameserver	Serial
ns1.csnet.nl (194.69.16.18)	2026092505
ns2.csnet.nl (194.69.18.18)	2026092505

Checks

✓ Serial 2026092505 everywhere #22

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

SOA refresh 8h, retry 2h, expire 14d, negative TTL 5m.
✓ Primary is a public nameserver #24

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

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

The serial 2026092505 follows the YYYYMMDDnn convention (2026-09-25).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 10 iterations, 0-byte salt
Signatures valid until: 25 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
22068	RSASHA1-NSEC3-SHA1 (7)	SHA256 E2D70AB82BF6FE80…	yes
52157	RSASHA1-NSEC3-SHA1 (7)	SHA256 51A51A59E86FEF45…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
1099	KSK (257)	RSASHA1-NSEC3-SHA1 (7)
52157	ZSK (256)	RSASHA1-NSEC3-SHA1 (7)
30693	ZSK (256)	RSASHA1-NSEC3-SHA1 (7)
22068	KSK (257)	RSASHA1-NSEC3-SHA1 (7)

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 22068 (SHA256), key tag 52157 (SHA256).
!

Deprecated algorithm

SHA-1 based algorithms are deprecated and rejected by some validators: RSASHA1-NSEC3-SHA1 (7). Roll over to ECDSAP256SHA256 (13).

#29
!

Signatures expire soon

The earliest signature expires at 2026-10-25 06:39 UTC (in 65h0m0s). Check that automatic re-signing works.

#30
!

NSEC3 with extra iterations or salt

NSEC3 uses 10 iterations and a 0-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

10 records at the apex

Found

Read from: 194.69.16.18:53

Type	Value	TTL
SOA	ns1.csnet.nl. hostmaster.csnet.nl. 2026092505 28800 7200 1209600 300	300
NS	ns1.csnet.nl.	300
NS	ns2.csnet.nl.	300
A	194.69.28.138	300
MX	10 virusscan5.csnet.nl.	300
MX	10 virusscan4.csnet.nl.	300
TXT	"google-site-verification=5YrQeBsEBO6rM7iP44bsdbjgYzPRQ7WhQy2zep5_hgE"	300
TXT	"v=spf1 mx include:_senderspf.csnet.nl ip4:194.69.16.0/20 -all"	300
TXT	"======"	300
TXT	"=nieuwe streamers="	300

Checks

✓ TTLs within range #32

TTLs: A 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.
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