Domain report: co2-prestatieladder.nl

Registration

info

.nl country-code

Found

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

Lookup error: https://rdap.sidn.nl/domain/co2-prestatieladder.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.
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Could not be checked

The RDAP lookup failed, so this could not be checked: https://rdap.sidn.nl/domain/co2-prestatieladder.nl returned HTTP 429

#3

Delegation

info

ns0.transip.net, ns1.transip.nl, ns2.transip.eu

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns0.transip.net, ns1.transip.nl, ns2.transip.eu
NS in the zone: ns0.transip.net, ns1.transip.nl, ns2.transip.eu

Nameserver	Addresses	Network (AS)	Glue
ns0.transip.net	195.135.195.195 2a01:7c8:dddd:195::195	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	-
ns1.transip.nl	195.8.195.195 2a01:7c8:7000:195::195	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	195.8.195.195 2a01:7c8:7000:195::195
ns2.transip.eu	37.97.199.195 2a01:7c8:f:c1f::195	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	-

Checks

✓ 3 nameservers #6

Delegated to ns0.transip.net, ns1.transip.nl, ns2.transip.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.
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All nameservers in one AS

All nameserver addresses are announced by one network operator (AS20857 (TRANSIP-AS - Signet B.V., NL): 6 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 3 TLDs #12

Nameserver names use the TLDs .eu, .net, .nl.
✓ 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
ns0.transip.net 195.135.195.195	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-
ns0.transip.net 2a01:7c8:dddd:195::195	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-
ns1.transip.nl 195.8.195.195	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-
ns1.transip.nl 2a01:7c8:7000:195::195	NOERROR, 13 ms, authoritative	no	yes / yes	refused	-
ns2.transip.eu 37.97.199.195	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-
ns2.transip.eu 2a01:7c8:f:c1f::195	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

pass

serial 2026021801 · primary ns0.transip.net

Found

Primary (MNAME): ns0.transip.net
Contact (RNAME): hostmaster.transip.nl
Serial: 2026021801
Refresh / retry: 86400 s / 1800 s
Expire: 2419200 s
Negative TTL: 300 s

Serial per nameserver

Nameserver	Serial
ns0.transip.net (195.135.195.195)	2026021801
ns0.transip.net (2a01:7c8:dddd:195::195)	2026021801
ns1.transip.nl (195.8.195.195)	2026021801
ns1.transip.nl (2a01:7c8:7000:195::195)	2026021801
ns2.transip.eu (37.97.199.195)	2026021801
ns2.transip.eu (2a01:7c8:f:c1f::195)	2026021801

Checks

✓ Serial 2026021801 everywhere #22

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

SOA refresh 1d, retry 30m, expire 28d, negative TTL 5m.
✓ Primary is a public nameserver #24

The primary nameserver ns0.transip.net is one of the listed nameservers.
✓ Contact hostmaster@transip.nl #25

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

The serial 2026021801 follows the YYYYMMDDnn convention (2026-02-18).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 0 iterations, 8-byte salt
Signatures valid until: 29 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
62595	ECDSAP256SHA256 (13)	SHA256 1D2B4031C4E05133…	yes
18571	RSASHA256 (8)	SHA256 D61AB5E9508BC8E7…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
18571	KSK (257)	RSASHA256 (8)
16770	ZSK (256)	RSASHA256 (8)
62595	KSK (257)	ECDSAP256SHA256 (13)
23548	ZSK (256)	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 62595 (SHA256), key tag 18571 (SHA256).
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13), RSASHA256 (8).
✓ Signatures valid until 2026-10-29 #30

The earliest DNSKEY/SOA signature expires at 2026-10-29 00:00 UTC.
!

NSEC3 with extra iterations or salt

NSEC3 uses 0 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

info

15 records at the apex

Found

Read from: 195.135.195.195:53

Type	Value	TTL
SOA	ns0.transip.net. hostmaster.transip.nl. 2026021801 86400 1800 2419200 300	3600
NS	ns1.transip.nl.	86400
NS	ns0.transip.net.	86400
NS	ns2.transip.eu.	86400
A	185.88.141.62	300
AAAA	2a00:c6c0:0:136:1::62	300
MX	10 co2-prestatieladder.nl.	300
TXT	"5 ALT1.ASPMX.L.GOOGLE.COM."	300
TXT	"10 ALT3.ASPMX.L.GOOGLE.COM."	300
TXT	"mandrill_verify.3ForWHxx5H7qJqnkNe0WOA"	300
TXT	"5 ALT2.ASPMX.L.GOOGLE.COM."	300
TXT	"v=spf1 +a +mx include:spf.protection.outlook.com include:servers.mcsv.net include:_spf.google.com ip4:37.34.49.23 ip4:141.138.204.162 ip4:141.138.195.155 ip4:136.144.132.194 ip4:136.144.132.152 ip4:149.210.131.116 ip4:136.144.145.147 -all"	300
TXT	"10 ALT4.ASPMX.L.GOOGLE.COM."	300
TXT	"google-site-verification=QZeVgFUFeTC2_4fhlnfMPTQDw6dMeq1LUoNu3fnQ7o8"	300
TXT	"1 ASPMX.L.GOOGLE.COM."	300

Checks

✓ TTLs within range #32

TTLs: A 5m, AAAA 5m, MX 5m, 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.
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Wildcard record

A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.

#34
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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