Domain report: vergelijkdezorgverzekeringen.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

warn

ns1.thednscompany.com, ns2.thednscompany.com

Found

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

Nameserver	Addresses	Network (AS)	Glue
ns1.thednscompany.com	185.145.63.233 2a02:cc9:0:63::233	AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL	-
ns2.thednscompany.com	37.48.115.145 2001:1af8:4700:a112:13::50	AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL	-
ns3.thednscompany.com (zone only)	149.210.192.124 2a01:7c8:aab5:5b3::1	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	-

Checks

i

2 nameservers

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

#6
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only in the zone: ns3.thednscompany.com. ns1.thednscompany.com, ns2.thednscompany.com, ns3.thednscompany.com report NS ns1.thednscompany.com ns2.thednscompany.com ns3.thednscompany.com.

#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.
✓ 2 autonomous systems #11

The nameservers are spread over: AS20857 (TRANSIP-AS - Signet B.V., NL): 2 addresses; AS60781 (LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL): 4 addresses.
i

All nameserver names under .com

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

pass

6 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.thednscompany.com 185.145.63.233	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns1.thednscompany.com 2a02:cc9:0:63::233	NOERROR, 15 ms, authoritative	no	yes / yes	refused	-
ns2.thednscompany.com 37.48.115.145	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns2.thednscompany.com 2001:1af8:4700:a112:13::50	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns3.thednscompany.com 149.210.192.124	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-
ns3.thednscompany.com 2a01:7c8:aab5:5b3::1	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-

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.
✓ 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

warn

serial 2025112000 · primary ns1.thednscompany.com

Found

Primary (MNAME): ns1.thednscompany.com
Contact (RNAME): hostmaster.vergelijkdezorgverzekeringen.nl
Serial: 2025112000
Refresh / retry: 3600 s / 3600 s
Expire: 1209600 s
Negative TTL: 86400 s

Serial per nameserver

Nameserver	Serial
ns1.thednscompany.com (185.145.63.233)	2025112000
ns1.thednscompany.com (2a02:cc9:0:63::233)	2025112000
ns2.thednscompany.com (37.48.115.145)	2025112000
ns2.thednscompany.com (2001:1af8:4700:a112:13::50)	2025112000
ns3.thednscompany.com (149.210.192.124)	2025112000
ns3.thednscompany.com (2a01:7c8:aab5:5b3::1)	2025112000

Checks

✓ Serial 2025112000 everywhere #22

All nameservers serve the same version of the zone.
!

Unusual SOA timers

retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 14d, negative TTL 1d.

#23
✓ Primary is a public nameserver #24

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

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

The serial 2025112000 follows the YYYYMMDDnn convention (2025-11-20).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 0 iterations, 0-byte salt
Signatures valid until: 5 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
9526	ECDSAP256SHA256 (13)	SHA256 FA978FEC24D66D42…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
9526	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 9526 (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 as recommended #31

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

Records

info

8 records at the apex

Found

Read from: 185.145.63.233:53

Type	Value	TTL
SOA	ns1.thednscompany.com. hostmaster.vergelijkdezorgverzekeringen.nl. 2025112000 3600 3600 1209600 86400	3600
NS	ns3.thednscompany.com.	3600
NS	ns1.thednscompany.com.	3600
NS	ns2.thednscompany.com.	3600
A	87.236.102.210	3600
AAAA	2a02:cc8::102:210	3600
MX	10 mail.vergelijkdezorgverzekeringen.nl.	3600
TXT	"v=spf1 include:spf.mailjet.com include:servers.mcsv.net ip4:188.166.126.185 include:spf.ymlp.com ~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