pkn.nl

Checked 22 October 2026, 15:11 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 8 info

Registration

info

.nl country-code

Found

TLD
.nl (country-code)
ICANN policies apply
no
Lookup error: https://rdap.sidn.nl/domain/pkn.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/pkn.nl returned HTTP 429
    #3

Delegation

warn

ns1.pknhosting.nl, ns2.pknhosting.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.pknhosting.nl, ns2.pknhosting.nl
NS in the zone
ns1.pknhosting.nl, ns2.pknhosting.nl
NameserverAddressesNetwork (AS)Glue
ns1.pknhosting.nl185.33.117.45AS20495 WEDARE - We Dare B.V., NL185.33.117.45
ns2.pknhosting.nl84.244.149.204AS20495 WEDARE - We Dare B.V., NL84.244.149.204

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.pknhosting.nl, ns2.pknhosting.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 different networks #10
    The nameservers are spread over 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS20495 (WEDARE - We Dare B.V., NL): 2 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

warn

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.pknhosting.nl 185.33.117.45NOERROR, 11 ms, authoritativenoyes / yesrefused9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.15
ns2.pknhosting.nl 84.244.149.204NOERROR, 10 ms, authoritativenoyes / yesrefused9.11.36-RedHat-9.11.36-11.el8_9

Checks

  • ✓ All respond #14
    All 2 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: ns1.pknhosting.nl: "9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.15"; ns2.pknhosting.nl: "9.11.36-RedHat-9.11.36-11.el8_9". 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

warn

serial 2026100101 · primary ns1.pknhosting.nl

Found

Primary (MNAME)
ns1.pknhosting.nl
Contact (RNAME)
hostmaster.pkn.nl
Serial
2026100101
Refresh / retry
3600 s / 3600 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.pknhosting.nl (185.33.117.45)2026100101
ns2.pknhosting.nl (84.244.149.204)2026100101

Checks

  • ✓ Serial 2026100101 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.pknhosting.nl is one of the listed nameservers.
  • ✓ Contact hostmaster@pkn.nl #25
    The SOA RNAME hostmaster.pkn.nl means hostmaster@pkn.nl.
  • ✓ Date-based serial #26
    The serial 2026100101 follows the YYYYMMDDnn convention (2026-10-01).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
5 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
38305RSASHA256 (8)SHA256 75BF029A94835B50…yes
57760RSASHA256 (8)SHA256 96733B28BBAE130D…NO

DNSKEY in the zone

Key tagRoleAlgorithm
62943ZSK (256)RSASHA256 (8)
38305KSK (257)RSASHA256 (8)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • i
    Unused DS records
    These DS records match no key in the zone: key tag 57760 (SHA256). That is normal during a key rollover; otherwise remove them.
    #28
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Signatures valid until 2026-11-05 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-05 01:20 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

info

10 records at the apex

Found

Read from
185.33.117.45:53
TypeValueTTL
SOAns1.pknhosting.nl. hostmaster.pkn.nl. 2026100101 3600 3600 1209600 864003600
NSns2.pknhosting.nl.600
NSns1.pknhosting.nl.600
A89.41.171.121600
AAAA2a01:7c8:e001:f9::1f3c600
MX0 pkn-nl.mail.protection.outlook.com.600
TXT"MS=ms60003447"600
TXT"google-site-verification=oOakyyJ6u48jBcz-Tklvs4d1V8WgfkriyYi9xdy8ySs"600
TXT"v=spf1 include:_s0.pknhosting.nl ~all"600
TXT"WLixB3MYSb50BBrH/+PHNobeMpSSFYK3SGMB6w9WuMD6kBTNB+BKN1vaTAd/TjfUs1YmgJ2IFzusQNIi7UGNNYQ=="600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, AAAA 10m, MX 10m, NS 10m. The NS TTL at the parent is 1h and in the zone 10m; 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