omroepzeeland.nl

Checked 21 October 2026, 21:24 UTC · via 8.8.8.8
✗Problems found
23 passed 3 warnings 1 failed 8 info

Registration

info

.nl country-code · DELTA Fiber Nederland B.V.

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
DELTA Fiber Nederland B.V.
Registered
20 May 1998
Last changed
3 April 2025
Status
active
Registry nameservers
ns1.deltazakelijk.nl, ns2.deltazakelijk.nl
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

warn

ns1.deltazakelijk.nl, ns2.deltazakelijk.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.deltazakelijk.nl, ns2.deltazakelijk.nl
NS in the zone
ns1.deltazakelijk.nl, ns2.deltazakelijk.nl
NameserverAddressesNetwork (AS)Glue
ns1.deltazakelijk.nl109.109.120.8 2a02:988::8AS30925 SPEEDXS-AS - DELTA Fiber Nederland B.V., NL AS30925 SPEEDXS-AS - DELTA Fiber Nederland B.V., NL-
ns2.deltazakelijk.nl109.109.120.88 2a02:988::88AS30925 SPEEDXS-AS - DELTA Fiber Nederland B.V., NL AS30925 SPEEDXS-AS - DELTA Fiber Nederland B.V., NL-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.deltazakelijk.nl, ns2.deltazakelijk.nl.
    #6
  • ✓ 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 one network
    all IPv4 addresses are in 109.109.120.0/24; all IPv6 addresses are in 2a02:988::/48. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS30925 (SPEEDXS-AS - DELTA Fiber Nederland B.V., NL): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .nl
    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

fail

3 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.deltazakelijk.nl 109.109.120.8NOERROR, 14 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)
ns1.deltazakelijk.nl 2a02:988::8no responsenono / no--
ns2.deltazakelijk.nl 109.109.120.88NOERROR, 14 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)
ns2.deltazakelijk.nl 2a02:988::88NOERROR, 10 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: ns1.deltazakelijk.nl (2a02:988::8): read udp [2a01:4f8:1c1c:eebf::1]:42291->[2a02:988::8]:53: i/o timeout.
    #14
  • ✓ 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.deltazakelijk.nl: "PowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)"; ns2.deltazakelijk.nl: "PowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@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 2026102102 · primary ns1.deltazakelijk.nl

Found

Primary (MNAME)
ns1.deltazakelijk.nl
Contact (RNAME)
ict.omroepzeeland.nl
Serial
2026102102
Refresh / retry
10800 s / 3600 s
Expire
1209600 s
Negative TTL
10800 s

Serial per nameserver

NameserverSerial
ns1.deltazakelijk.nl (109.109.120.8)2026102102
ns2.deltazakelijk.nl (109.109.120.88)2026102102
ns2.deltazakelijk.nl (2a02:988::88)2026102102

Checks

  • ✓ Serial 2026102102 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 14d, negative TTL 3h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.deltazakelijk.nl is one of the listed nameservers.
  • ✓ Contact ict@omroepzeeland.nl #25
    The SOA RNAME ict.omroepzeeland.nl means ict@omroepzeeland.nl.
  • ✓ Date-based serial #26
    The serial 2026102102 follows the YYYYMMDDnn convention (2026-10-21).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
29 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
41890RSASHA256 (8)SHA256 1A24306817989D88…yes
53701RSASHA256 (8)SHA256 1B17E2DE6848F72B…yes

DNSKEY in the zone

Key tagRoleAlgorithm
42234ZSK (256)RSASHA256 (8)
41890KSK (257)RSASHA256 (8)
53701KSK (257)RSASHA256 (8)

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 41890 (SHA256), key tag 53701 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Signatures valid until 2026-10-29 #30
    The earliest DNSKEY/SOA signature expires at 2026-10-29 20:28 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

warn

10 records at the apex

Found

Read from
109.109.120.8:53
TypeValueTTL
SOAns1.deltazakelijk.nl. ict.omroepzeeland.nl. 2026102102 10800 3600 1209600 10800297
NSns1.deltazakelijk.nl.0
NSns2.deltazakelijk.nl.0
A93.119.12.159300
MX0 omroepzeeland-nl.l-v1.mx.microsoft.300
TXT"ppe-180eb7106cff3f3497622830dadab5ac6599db92"300
TXT"v=spf1 mx a ip4:212.115.204.1/28 ip4:212.115.207.94/32 ip4:217.63.66.37/32 include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:_spf.salesforce.com include:25488698.spf01.hubspotemail.net include:lms.plusport.com -all"300
TXT"google-site-verification=2a8f0PgLof3IWKRYm4FJRt8pZ9wYMhFEBq6fii-J1OE"300
TXT"brevo-code:ae26439f7b8d2329c1e74fcec14004f7"300
TXT"apple-domain-verification=N8xznn9BAIxzpX8n"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: NS (0s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 0s; resolvers may use either.
    #32
  • ✓ 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