npo.nl

Checked 21 October 2026, 21:23 UTC · via 8.8.8.8
iAll checks passed
28 passed 0 warnings 0 failed 5 info

Registration

info

.nl country-code

Found

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

Delegation

pass

ns1.npohosting.nl, ns2.npohosting.eu, ns3.npohosting.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.npohosting.nl, ns2.npohosting.eu, ns3.npohosting.nl
NS in the zone
ns1.npohosting.nl, ns2.npohosting.eu, ns3.npohosting.nl
NameserverAddressesNetwork (AS)Glue
ns1.npohosting.nl63.32.16.218 2a05:d018:ccc:da02::2:53AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns2.npohosting.eu145.58.30.126 2a02:458:101:30::7eAS25182 PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL AS25182 PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL-
ns3.npohosting.nl145.58.30.129 2a02:458:101:30::81AS25182 PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL AS25182 PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.npohosting.nl, ns2.npohosting.eu, ns3.npohosting.nl.
  • ✓ 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: AS16509 (AMAZON-02 - Amazon.com, Inc., US): 2 addresses; AS25182 (PUBLIEKE-OMROEP-AS - Stichting Nederlandse Publieke Omroep, NL): 4 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

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.npohosting.nl 63.32.16.218NOERROR, 23 ms, authoritativenoyes / yesrefusedNameservices operated by NPO
ns1.npohosting.nl 2a05:d018:ccc:da02::2:53NOERROR, 23 ms, authoritativenoyes / yesrefusedNameservices operated by NPO
ns2.npohosting.eu 145.58.30.126NOERROR, 10 ms, authoritativenoyes / yesrefusedNameservices operated by NPO
ns2.npohosting.eu 2a02:458:101:30::7eNOERROR, 10 ms, authoritativenoyes / yesrefusedNameservices operated by NPO
ns3.npohosting.nl 145.58.30.129NOERROR, 10 ms, authoritativenoyes / yesrefusedNameservices operated by NPO
ns3.npohosting.nl 2a02:458:101:30::81NOERROR, 10 ms, authoritativenoyes / yesrefusedNameservices operated by NPO

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.npohosting.nl: "Nameservices operated by NPO"; ns2.npohosting.eu: "Nameservices operated by NPO"; ns3.npohosting.nl: "Nameservices operated by NPO".
    #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 2026102101 · primary ns1.npohosting.nl

Found

Primary (MNAME)
ns1.npohosting.nl
Contact (RNAME)
hostmaster.omroep.nl
Serial
2026102101
Refresh / retry
14400 s / 7200 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.npohosting.nl (63.32.16.218)2026102101
ns1.npohosting.nl (2a05:d018:ccc:da02::2:53)2026102101
ns2.npohosting.eu (145.58.30.126)2026102101
ns2.npohosting.eu (2a02:458:101:30::7e)2026102101
ns3.npohosting.nl (145.58.30.129)2026102101
ns3.npohosting.nl (2a02:458:101:30::81)2026102101

Checks

  • ✓ Serial 2026102101 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 2h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.npohosting.nl is one of the listed nameservers.
  • ✓ Contact hostmaster@omroep.nl #25
    The SOA RNAME hostmaster.omroep.nl means hostmaster@omroep.nl.
  • ✓ Date-based serial #26
    The serial 2026102101 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
16979ECDSAP256SHA256 (13)SHA256 1B9FE9C4142D13B1…yes

DNSKEY in the zone

Key tagRoleAlgorithm
16979KSK (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 16979 (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.
  • 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

31 records at the apex

Found

Read from
63.32.16.218:53
TypeValueTTL
SOAns1.npohosting.nl. hostmaster.omroep.nl. 2026102101 14400 7200 604800 3007200
NSns1.npohosting.nl.7200
NSns2.npohosting.eu.7200
NSns3.npohosting.nl.7200
A18.65.194.127300
A18.65.194.100300
A18.65.194.48300
A18.65.194.49300
AAAA2600:9000:20b3:2a00:15:d0a2:2d80:93a1300
AAAA2600:9000:20b3:cc00:15:d0a2:2d80:93a1300
AAAA2600:9000:20b3:be00:15:d0a2:2d80:93a1300
AAAA2600:9000:20b3:9c00:15:d0a2:2d80:93a1300
AAAA2600:9000:20b3:5200:15:d0a2:2d80:93a1300
AAAA2600:9000:20b3:e800:15:d0a2:2d80:93a1300
AAAA2600:9000:20b3:f000:15:d0a2:2d80:93a1300
AAAA2600:9000:20b3:0:15:d0a2:2d80:93a1300
MX10 npo-nl.mail.protection.outlook.com.300
TXT"MS=ms11050194"7200
TXT"jamf-site-verification=Ri4MegVeZTmfY30Fguzh2g"7200
TXT"google-site-verification=-M-b2BwnsrwY9UKxYTjB6gJcheC1Li5QbL135YXFrtA"7200
TXT"anthropic-domain-verification-zgpyx4=MTJJEfDj5eCs1oM9DNSBc14bM"7200
TXT"mentimeter-b33f2965-1977-46f1-b9d1-b935167ff183"7200
TXT"apple-domain-verification=LI1VuQqj0lu3J3Wj"7200
TXT"adobe-idp-site-verification=e98aa3c429330949186cee51800e7bc4e6555c4ef74d9e20fcbf979d898afa9e"7200
TXT"facebook-domain-verification=17kucgn47mmzus8kf4ggs0mqqfj41m"7200
TXT"airtable-verification=86e800ca128580dc38701d15a20b1fe2"7200
TXT"v=spf1 ip4:145.58.64.80 include:spf.omroep.nl ip4:212.23.48.248/29 include:spf.protection.outlook.com " "include:spf.mandrillapp.com include:spf_c.oraclecloud.com include:amazonses.com include:sendgrid.net include:virtualmail.webpower.eu -all"7200
TXT"P1pB8W1YfvMvT3o05U/IBCSlE7BUIqGIva0u9zRrGl136fM+LKXleZpW6t4FgoyZOdpCo6y3rZr+Y10xhLe+EQ=="7200
TXT"slack-domain-verification=kb0t2zrUduv6TbeY7B0wbDhv4Z2ENN3PsIwmQDYU"7200
TXT"tmes=72b9ca545d512b6d8d5e1829b6c4f3f3"7200
TXT"atlassian-domain-verification=QOugd/WZOWQFSi/kU2zkrIwK9yY9iqD7goNTyrqJsadw7bvjuGIojAs2uF0XMfXn"7200

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, NS 2h. The NS TTL at the parent is 1h and in the zone 2h; 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