Domain report: provinciegroningen.nl

Registration

info

.nl country-code

Found

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

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

#3

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, 13 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, 13 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, 13 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, 13 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, 10 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 2026100701 · primary nsauth1.bit.nl

Found

Primary (MNAME): nsauth1.bit.nl
Contact (RNAME): hostmaster.bit.nl
Serial: 2026100701
Refresh / retry: 28800 s / 7200 s
Expire: 604800 s
Negative TTL: 300 s

Serial per nameserver

Nameserver	Serial
nsauth1.bit.nl (213.136.12.51)	2026100701
nsauth1.bit.nl (2001:7b8:3:2c::53)	2026100701
nsauth2.bit.nl (213.136.12.59)	2026100701
nsauth2.bit.nl (2001:7b8:3:2d::53)	2026100701
nsauth3.bitnl.eu (85.17.15.88)	2026100701
nsauth3.bitnl.eu (2001:1af8:4700:a119:16:0:8517:1588)	2026100701

Checks

✓ Serial 2026100701 everywhere #22

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

SOA refresh 8h, retry 2h, expire 7d, negative TTL 5m.
✓ 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 2026100701 follows the YYYYMMDDnn convention (2026-10-07).

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
14248	ECDSAP256SHA256 (13)	SHA256 9D33F796ABFE89A4…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
14248	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 14248 (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

pass

57 records at the apex

Found

Read from: 213.136.12.51:53

Type	Value	TTL
SOA	nsauth1.bit.nl. hostmaster.bit.nl. 2026100701 28800 7200 604800 300	300
NS	nsauth3.bitnl.eu.	300
NS	nsauth2.bit.nl.	300
NS	nsauth1.bit.nl.	300
A	194.13.8.26	300
AAAA	2a07:3505:81:2:2002:1:1:20	300
MX	10 provinciegroningen-nl.mail.protection.outlook.com.	300
MX	0 provinciegroningen-nl.g-v1.mx.microsoft.	300
TXT	"2d718d6b29ee8c08d682a1aecba1a51347e483b6f282b21c55a3491c9d5edfa3"	300
TXT	"7b45e8b858695ab8e2ec965e36c9421175bc8295b41520d518c62beefe3d17f7"	300
TXT	"B05Vpi1+Wit3Bt5VrT0Ba9AN8DzgNuq8tO/CTkR+cgM="	300
TXT	"BDRc/FNJxjAoPgTCRXDVEzIOn1XskNszvVMQ4UluWrQ="	300
TXT	"CRHeYwlmt3I9kuwK/frw3OnC4DardQbC37O2ulp8BpI="	300
TXT	"MS=ms27551585"	300
TXT	"Provincie Groningen (16746) (33804)"	300
TXT	"_087i6txcmkrr7t3odikhdh87z1mx26c"	300
TXT	"_0qpa7wb8sigtx1pjvlj8yl4dhyamvr4"	300
TXT	"_4euufqkth5j9d9zfwzzfndbrddn1tma"	300
TXT	"_4o5euezysn15spoue2hokferp6vne1f"	300
TXT	"_85tflcz5zh5nyck3m1h95xv0xt8ojuu"	300
TXT	"_94jgzpd14tv8w3ij819iowgfpxd7svo"	300
TXT	"_amt7dvs6zvz6x6ensivpwr2mt8eg32h"	300
TXT	"_cet4jqntwk9k96uoxpg49lf3emqprju"	300
TXT	"_d2gvnh0jq6u9f4mvq294kvc78vnnpwd"	300
TXT	"_dbj1vruu5my01kvm6om8ww4yzveee5y"	300
TXT	"_e6rm0u8coaew2ix2bsli671hwhqlhy8"	300
TXT	"_erk841wby3rpl1pneo00vn1uyxtpgyx"	300
TXT	"_gn5sih9qzdtegt9tds0gnpm65napi45"	300
TXT	"_gzioqipme5exps98090vxvazinrf9bb"	300
TXT	"_ht8ls1w3vv188ficobdtpbsi4m1ct2c"	300
TXT	"_ivz78qsh76fcn0x7ii0vjxj2l900nsq"	300
TXT	"_j8y2cn49ippic3gcwxxb3dsmtv4o81q"	300
TXT	"_kppzl3iks7hpz3bvv1kpty81p8ph64c"	300
TXT	"_krwp14ga2a8jbz2ulsfeiksyiygyq4a"	300
TXT	"_ktx58ixq8z3xnsofiqpk7kkkh4544q3"	300
TXT	"_moovp0ansybwzyupcuqtfsabon1mbyx"	300
TXT	"_n5zvepc9u5v4gt3jb7xjdji085xha0n"	300
TXT	"_ql9y5bvyi7jf19tg5zhv8cvhlpnlt6d"	300
TXT	"_qnfi57ax81aq4rmlu8glzjrit5pffbl"	300
TXT	"_qvi4p1a9p4dbxoloidx9p51iao1gcrt"	300
TXT	"_r63rdovp3zevtrx15tp4t6yomrmtxp5"	300
TXT	"_srynld1fj2446hfcl20f3wfrr1sjb2o"	300
TXT	"_uw0lnm5bsk069d7wh3w82o6j87tuvfn"	300
TXT	"_v40zxrixls5d8jo5pr2gdxd9e0636gm"	300
TXT	"_wlg2ariqlqd87s92g5pubvf4biziyi6"	300
TXT	"_xlz1kdfz6sult9se49ylg95j76tc7w4"	300
TXT	"_yi2nw0lftwren9hv65t5tqvye0rhrtj"	300
TXT	"adobe-idp-site-verification=d50f8189-c920-4681-aebc-a3b8aef87189"	300
TXT	"autodesk-domain-verification=ElDy0_kIdFhuIjdHesSh"	300
TXT	"bw=jYm7dViNSJHULwltrcuCzqMN3gi4rDM3cM3xGF8nZXQw"	300
TXT	"cisco-ci-domain-verification=4f07494e65b617dda83f3170143316dc22a75acffde5658cab88b1100181375f"	300
TXT	"google-site-verification=fXurfqrRf1EYzP81SW8l_CIaCtf-G0kCYTZl6bjPASc"	300
TXT	"mindmanager-verification=892775f648bcfd24ffcc48a408f428550c778e74a57363e191d40d07530f8829"	300
TXT	"v=spf1 mx a:smtp.connexys.nl a:mail.vserv.nl ip4:194.13.8.115 ip4:62.204.92.128/26 ip4:194.13.12.126 ip4:87.249.108.124 ip4:77.87.163.32/27 include:spf.protection.outlook.com include:_spf.mailplus.nl include:spf.afas.online include:spf.eprov.nl include:sp" "f.simgroephosting.nl include:secumail.email -all"	300
CAA	0 issue "kpn.com"	300
CAA	0 iodef "mailto:bti@provinciegroningen.nl"	300
CAA	0 issue "digicert.com"	300

Checks

✓ TTLs within range #32

TTLs: A 5m, AAAA 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.
✓ CAA restricts issuance #35

Certificates may be issued by: kpn.com, digicert.com.