nvz-ziekenhuizen.nl

Checked 22 October 2026, 15:01 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/nvz-ziekenhuizen.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/nvz-ziekenhuizen.nl returned HTTP 429
    #3

Delegation

info

ns01.hostnet.nl, ns02.hostnet.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns01.hostnet.nl, ns02.hostnet.nl
NS in the zone
ns01.hostnet.nl, ns02.hostnet.nl
NameserverAddressesNetwork (AS)Glue
ns01.hostnet.nl195.206.121.13 2001:67c:28cc::13AS197495 ONECOM-INFRA - One.com A/S, DK AS197495 ONECOM-INFRA - One.com A/S, DK-
ns02.hostnet.nl185.10.11.13 2001:67c:3c0::13AS51468 ONECOM - One.com A/S, DK AS51468 ONECOM - One.com A/S, DK-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns01.hostnet.nl, ns02.hostnet.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 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS197495 (ONECOM-INFRA - One.com A/S, DK): 2 addresses; AS51468 (ONECOM - One.com A/S, DK): 2 addresses.
  • 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

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns01.hostnet.nl 195.206.121.13NOERROR, 19 ms, authoritativenoyes / yesrefused-
ns01.hostnet.nl 2001:67c:28cc::13NOERROR, 19 ms, authoritativenoyes / yesrefused-
ns02.hostnet.nl 185.10.11.13NOERROR, 19 ms, authoritativenoyes / yesrefused-
ns02.hostnet.nl 2001:67c:3c0::13NOERROR, 19 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 4 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 2026100101 · primary ns01.hostnet.nl

Found

Primary (MNAME)
ns01.hostnet.nl
Contact (RNAME)
hostmaster.hostnet.nl
Serial
2026100101
Refresh / retry
14400 s / 3600 s
Expire
1209600 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns01.hostnet.nl (195.206.121.13)2026100101
ns01.hostnet.nl (2001:67c:28cc::13)2026100101
ns02.hostnet.nl (185.10.11.13)2026100101
ns02.hostnet.nl (2001:67c:3c0::13)2026100101

Checks

  • ✓ Serial 2026100101 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 14d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns01.hostnet.nl is one of the listed nameservers.
  • ✓ Contact hostmaster@hostnet.nl #25
    The SOA RNAME hostmaster.hostnet.nl means hostmaster@hostnet.nl.
  • ✓ Date-based serial #26
    The serial 2026100101 follows the YYYYMMDDnn convention (2026-10-01).

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 tagAlgorithmDigestMatches a key
62444RSASHA256 (8)SHA256 6ABB2200C3BF9341…yes

DNSKEY in the zone

Key tagRoleAlgorithm
62444KSK (257)RSASHA256 (8)
32569ZSK (256)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 62444 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ 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

info

12 records at the apex

Found

Read from
195.206.121.13:53
TypeValueTTL
SOAns01.hostnet.nl. hostmaster.hostnet.nl. 2026100101 14400 3600 1209600 60014400
NSns02.hostnet.nl.14400
NSns01.hostnet.nl.14400
A193.37.205.26600
MX0 nvzziekenhuizen-nl0i.mail.protection.outlook.com.600
TXT"MS=ms10101010"600
TXT"v=spf1 include:amazonses.com include:_spf.mlsend.com include:_spf.hostnet.nl include:spf.protection.outlook.com include:spf.eu.signature365.net include:spf.afas.online ip4:37.220.150.233 ip4:92.67.23.229 ip4:62.166.51.206 ip4:185.30.236.52 ip4:81.175.86.1" "94 ip4:81.175.86.197 ip4:70.39.246.37 ip4:193.37.205.26 include:145884816.spf04.hubspotemail.net ~all"600
TXT"DomainVerification=L01TS55Z8YSR8JQSFIZ4EEHWT3Q441GXZWAG54XXKU50A7T7AMVBMXIIPO20MPHY"600
TXT"apple-domain-verification=OeGBYZvReL7rcP7Y"600
TXT"MS=ms14619298"600
TXT"google-site-verification=VeQdX0RYv_C_GzgNxPwl6N__xVf3NgUIp7jXZkMdYdM"600
TXT"imnqqcmudHG7QlUYEXfhG1s8j48tepg5"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 10m, NS 4h. The NS TTL at the parent is 1h and in the zone 4h; 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