Domain report: triodos.nl

Registration

info

.nl country-code · BIT B.V.

Found

TLD: .nl (country-code)
ICANN policies apply: no
Registrar: BIT B.V.
Registered: 6 November 1996
Last changed: 25 June 2026
Status: active
Registry nameservers: nsauth1.bit.nl, nsauth2.bit.nl, nsauth3.bitnl.eu
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

pass

nsauth1.bit.nl, nsauth2.bit.nl, nsauth3.bitnl.eu

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: nsauth1.bit.nl, nsauth2.bit.nl, nsauth3.bitnl.eu
NS in the zone: nsauth1.bit.nl, nsauth2.bit.nl, nsauth3.bitnl.eu

Nameserver	Addresses	Network (AS)	Glue
nsauth1.bit.nl	213.136.12.51 2001:7b8:3:2c::53	AS12859 NL-BIT - BIT BV, NL AS12859 NL-BIT - BIT BV, NL	213.136.12.51 2001:7b8:3:2c::53
nsauth2.bit.nl	213.136.12.59 2001:7b8:3:2d::53	AS12859 NL-BIT - BIT BV, NL AS12859 NL-BIT - BIT BV, NL	213.136.12.59 2001:7b8:3:2d::53
nsauth3.bitnl.eu	85.17.15.88 2001:1af8:4700:a119:16:0:8517:1588	AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL	-

Checks

✓ 3 nameservers #6

Delegated to nsauth1.bit.nl, nsauth2.bit.nl, nsauth3.bitnl.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 2 IPv4 /24s and 2 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS12859 (NL-BIT - BIT BV, NL): 4 addresses; AS60781 (LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL): 2 addresses.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .eu, .nl.
✓ 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
nsauth1.bit.nl 213.136.12.51	NOERROR, 11 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.15 (built May 11 2026 09:10:06 by root@localhost)
nsauth1.bit.nl 2001:7b8:3:2c::53	NOERROR, 11 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.15 (built May 11 2026 09:10:06 by root@localhost)
nsauth2.bit.nl 213.136.12.59	NOERROR, 11 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.15 (built May 11 2026 09:10:06 by root@localhost)
nsauth2.bit.nl 2001:7b8:3:2d::53	NOERROR, 11 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.15 (built May 11 2026 09:10:06 by root@localhost)
nsauth3.bitnl.eu 85.17.15.88	NOERROR, 9 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.11 (built Oct 15 2025 10:16:15 by root@localhost)
nsauth3.bitnl.eu 2001:1af8:4700:a119:16:0:8517:1588	NOERROR, 9 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.9.11 (built Oct 15 2025 10:16:15 by root@localhost)

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: nsauth1.bit.nl: "PowerDNS Authoritative Server 4.9.15 (built May 11 2026 09:10:06 by root@localhost)"; nsauth2.bit.nl: "PowerDNS Authoritative Server 4.9.15 (built May 11 2026 09:10:06 by root@localhost)"; nsauth3.bitnl.eu: "PowerDNS Authoritative Server 4.9.11 (built Oct 15 2025 10:16:15 by root@localhost)". 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 2026092801 · primary nsauth1.bit.nl

Found

Primary (MNAME): nsauth1.bit.nl
Contact (RNAME): hostmaster.bit.nl
Serial: 2026092801
Refresh / retry: 28800 s / 7200 s
Expire: 604800 s
Negative TTL: 43200 s

Serial per nameserver

Nameserver	Serial
nsauth1.bit.nl (213.136.12.51)	2026092801
nsauth1.bit.nl (2001:7b8:3:2c::53)	2026092801
nsauth2.bit.nl (213.136.12.59)	2026092801
nsauth2.bit.nl (2001:7b8:3:2d::53)	2026092801
nsauth3.bitnl.eu (85.17.15.88)	2026092801
nsauth3.bitnl.eu (2001:1af8:4700:a119:16:0:8517:1588)	2026092801

Checks

✓ Serial 2026092801 everywhere #22

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

SOA refresh 8h, retry 2h, expire 7d, negative TTL 12h.
✓ Primary is a public nameserver #24

The primary nameserver nsauth1.bit.nl is one of the listed nameservers.
✓ Contact hostmaster@bit.nl #25

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

The serial 2026092801 follows the YYYYMMDDnn convention (2026-09-28).

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: 29 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
30242	ECDSAP256SHA256 (13)	SHA256 92B6A7A22C33D2CC…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
30242	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 30242 (SHA256).
✓ Modern algorithms #29

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

The earliest DNSKEY/SOA signature expires at 2026-10-29 00:00 UTC.
✓ NSEC3 as recommended #31

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

Records

info

24 records at the apex

Found

Read from: 213.136.12.51:53

Type	Value	TTL
SOA	nsauth1.bit.nl. hostmaster.bit.nl. 2026092801 28800 7200 604800 43200	43200
NS	nsauth1.bit.nl.	43200
NS	nsauth2.bit.nl.	43200
NS	nsauth3.bitnl.eu.	43200
A	172.66.0.9	300
A	162.159.140.9	300
AAAA	2606:4700:7::9	300
AAAA	2a06:98c1:58::9	300
MX	10 mailgateway1.triodos.com.	43200
MX	20 mailgateway2.triodos.com.	43200
TXT	"google-site-verification=_mK61XPFlcswCnBupgsEaOv6RlGi-zNTCIOZLU5ne0c"	43200
TXT	"Y3ftsWWB2o6znYoHl34J+A/udu+wUWll6eZtFRQACrw="	43200
TXT	"szKbQ6iNdW7RjunOvlNZIzjycidevf415Ms4e6lQQro="	43200
TXT	"facebook-domain-verification=i39obbrmgof1608k3f8tanlxpvhwuu"	43200
TXT	"8Co76SCXfMwmD8jPg7FQEb4VRGNHKnLmtOetp++fvwQ="	43200
TXT	"google-site-verification=L0QeBOTb-qYv7snHHuMyDTUneT7fCJWDSuvuIdXyVsk"	43200
TXT	"cZwQ0ymIbzKpfcU+Pm2Bd0ApYBBzZuM3zAiJG+0MFk12u10n+uRhYLt1+uKy532iVFb8TNUlq8BEiuq9hvzfVQ=="	43200
TXT	"zC2z/ge4fGRBcp+Hfs5g1+XpdGlkShJqXzILsDwPDnc="	43200
TXT	"4auM5DA7/Du4U9hervV9LgJaf75ltbU2pmh4TaoEjxs="	43200
TXT	"_globalsign-domain-verification=taTYOGZapHMGjNITvdqMTYZXh3O4grtEOrsWudFPHH"	43200
TXT	"MS=ms80397376"	43200
TXT	"+6BBQXaYNErYFYdlRMiKmP3CCNFYomWS6HUHk27dAvk="	43200
TXT	"v=spf1 mx include:afas._spf.triodos.nl include:stater._spf.triodos.nl include:pressmailings._spf.triodos.nl include:spf.protection.outlook.com -all"	14400
TXT	"1JWrrCJmIgd6WEopWzTFj/VP+eWzOpYfoa7QGRNXNsc="	43200

Checks

✓ TTLs within range #32

TTLs: A 5m, AAAA 5m, MX 12h, NS 12h. The NS TTL at the parent is 1h and in the zone 12h; 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