Domain report: versio.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

info

ns1.cldin.eu, ns2.cldin.eu, ns3.cldin.eu

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.cldin.eu, ns2.cldin.eu, ns3.cldin.eu
NS in the zone: ns1.cldin.eu, ns2.cldin.eu, ns3.cldin.eu

Nameserver	Addresses	Network (AS)	Glue
ns1.cldin.eu	92.63.172.150 2a05:1500:600:9:1c00:26ff:fe00:1618	AS48635 CLDIN-NL - Your Hosting B.V., NL AS48635 CLDIN-NL - Your Hosting B.V., NL	-
ns2.cldin.eu	92.63.173.168 2a05:1500:702:3:1c00:1ff:fe00:14b1	AS48635 CLDIN-NL - Your Hosting B.V., NL AS48635 CLDIN-NL - Your Hosting B.V., NL	-
ns3.cldin.eu	195.8.208.2 2a05:1500:fe00::c3ff:fe08:d002	AS12859 NL-BIT - BIT BV, NL AS12859 NL-BIT - BIT BV, NL	-

Checks

✓ 3 nameservers #6

Delegated to ns1.cldin.eu, ns2.cldin.eu, ns3.cldin.eu.
✓ 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 3 IPv4 /24s and 3 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS12859 (NL-BIT - BIT BV, NL): 2 addresses; AS48635 (CLDIN-NL - Your Hosting B.V., NL): 4 addresses.
i

All nameserver names under .eu

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

6 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.cldin.eu 92.63.172.150	NOERROR, 16 ms, authoritative	no	yes / yes	refused	9.11.26-RedHat-9.11.26-6.el8
ns1.cldin.eu 2a05:1500:600:9:1c00:26ff:fe00:1618	NOERROR, 15 ms, authoritative	no	yes / yes	refused	9.11.26-RedHat-9.11.26-6.el8
ns2.cldin.eu 92.63.173.168	NOERROR, 17 ms, authoritative	no	yes / yes	refused	9.11.26-RedHat-9.11.26-6.el8
ns2.cldin.eu 2a05:1500:702:3:1c00:1ff:fe00:14b1	NOERROR, 18 ms, authoritative	no	yes / yes	refused	9.11.26-RedHat-9.11.26-6.el8
ns3.cldin.eu 195.8.208.2	NOERROR, 16 ms, authoritative	no	yes / yes	refused	9.11.26-RedHat-9.11.26-6.el8
ns3.cldin.eu 2a05:1500:fe00::c3ff:fe08:d002	NOERROR, 16 ms, authoritative	no	yes / yes	refused	9.11.26-RedHat-9.11.26-6.el8

Checks

✓ All respond #14

All 6 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.cldin.eu: "9.11.26-RedHat-9.11.26-6.el8"; ns2.cldin.eu: "9.11.26-RedHat-9.11.26-6.el8"; ns3.cldin.eu: "9.11.26-RedHat-9.11.26-6.el8". 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 1792287959 · primary ns1.cldin.eu

Found

Primary (MNAME): ns1.cldin.eu
Contact (RNAME): hostmaster.versio.nl
Serial: 1792287959
Refresh / retry: 3600 s / 900 s
Expire: 1209600 s
Negative TTL: 3600 s

Serial per nameserver

Nameserver	Serial
ns1.cldin.eu (92.63.172.150)	1792287959
ns1.cldin.eu (2a05:1500:600:9:1c00:26ff:fe00:1618)	1792287959
ns2.cldin.eu (92.63.173.168)	1792287959
ns2.cldin.eu (2a05:1500:702:3:1c00:1ff:fe00:14b1)	1792287959
ns3.cldin.eu (195.8.208.2)	1792287959
ns3.cldin.eu (2a05:1500:fe00::c3ff:fe08:d002)	1792287959

Checks

✓ Serial 1792287959 everywhere #22

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

SOA refresh 1h, retry 15m, expire 14d, negative TTL 1h.
✓ Primary is a public nameserver #24

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

The SOA RNAME hostmaster.versio.nl means hostmaster@versio.nl.
✓ Timestamp serial #26

The serial 1792287959 is a Unix timestamp (2026-10-18 01:45 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC
Signatures valid until: 17 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
20764	RSASHA256 (8)	SHA256 74760157314AF272…	NO
8177	RSASHA256 (8)	SHA256 F8AACAD26A78F573…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
25920	ZSK (256)	RSASHA256 (8)
55097	KSK (257)	RSASHA256 (8)
43727	KSK (257)	RSASHA256 (8)
60459	ZSK (256)	RSASHA256 (8)
8177	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.
i

Unused DS records

These DS records match no key in the zone: key tag 20764 (SHA256). That is normal during a key rollover; otherwise remove them.

#28
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-17 #30

The earliest DNSKEY/SOA signature expires at 2026-11-17 01:58 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

13 records at the apex

Found

Read from: 92.63.172.150:53

Type	Value	TTL
SOA	ns1.cldin.eu. hostmaster.versio.nl. 1792287959 3600 900 1209600 3600	86400
NS	ns1.cldin.eu.	86400
NS	ns3.cldin.eu.	86400
NS	ns2.cldin.eu.	86400
A	31.7.0.16	86400
AAAA	2a03:9700:8000::78	86400
MX	30 lastmx.spamexperts.net.	86400
MX	10 mx.spamexperts.com.	86400
MX	20 fallbackmx.spamexperts.eu.	86400
TXT	"google-gws-recovery-domain-verification=46313206"	86400
TXT	"MS=ms91515830"	86400
TXT	"v=spf1 include:spf.versio.nl include:spf.mydomainprovider.com include:sendgrid.net include:fdspfeuc.freshemail.io include:_spf.paytsoftware.com include:spf.protection.outlook.com include:spf.cm.puzzel.com ~all"	86400
TXT	"google-site-verification=vWcC_Vu_AyYZ0aAV2_v1LdHS2jOklQ9KC_ewJGKPmRI"	86400

Checks

✓ TTLs within range #32

TTLs: A 1d, AAAA 1d, MX 1d, NS 1d. The NS TTL at the parent is 1h and in the zone 1d; 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