rocva.nl

Checked 22 October 2026, 15:41 UTC · via 8.8.8.8
iAll checks passed
26 passed 0 warnings 0 failed 7 info

Registration

info

.nl country-code

Found

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

Delegation

info

ns1.rocva.nl, ns1.surfnet.nl, ns1.zurich.surf.net, ns2.surfnet.nl, ns3.surfnet.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.rocva.nl, ns1.surfnet.nl, ns1.zurich.surf.net, ns2.surfnet.nl, ns3.surfnet.nl
NS in the zone
ns1.rocva.nl, ns1.surfnet.nl, ns1.zurich.surf.net, ns2.surfnet.nl, ns3.surfnet.nl
NameserverAddressesNetwork (AS)Glue
ns1.rocva.nl145.100.65.10AS1103 SURFNET-NL - SURF B.V., NL145.100.65.10
ns1.surfnet.nl192.87.106.101 2001:610:1:800a:192:87:106:101AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL192.87.106.101 2001:610:1:800a:192:87:106:101
ns1.zurich.surf.net195.176.255.9 2001:620:0:9::1103AS559 Switch - SWITCH, CH AS559 Switch - SWITCH, CH-
ns2.surfnet.nl192.87.36.2 2001:610:3:200a:192:87:36:2AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL192.87.36.2 2001:610:3:200a:192:87:36:2
ns3.surfnet.nl195.169.124.71 2001:610:0:800c:195:169:124:71AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL195.169.124.71 2001:610:0:800c:195:169:124:71

Checks

  • ✓ 5 nameservers #6
    Delegated to ns1.rocva.nl, ns1.surfnet.nl, ns1.zurich.surf.net, ns2.surfnet.nl, ns3.surfnet.nl.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns1.rocva.nl.
  • ✓ 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 5 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS1103 (SURFNET-NL - SURF B.V., NL): 7 addresses; AS559 (Switch - SWITCH, CH): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .net, .nl.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns1.rocva.nl.
    #13

Nameservers

info

9 of 9 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.rocva.nl 145.100.65.10NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns1.surfnet.nl 192.87.106.101NOERROR, 10 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns1.surfnet.nl 2001:610:1:800a:192:87:106:101NOERROR, 9 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns1.zurich.surf.net 195.176.255.9NOERROR, 10 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surf.nl
ns1.zurich.surf.net 2001:620:0:9::1103NOERROR, 10 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surf.nl
ns2.surfnet.nl 192.87.36.2NOERROR, 12 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns2.surfnet.nl 2001:610:3:200a:192:87:36:2NOERROR, 12 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns3.surfnet.nl 195.169.124.71NOERROR, 10 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns3.surfnet.nl 2001:610:0:800c:195:169:124:71NOERROR, 10 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl

Checks

  • ✓ All respond #14
    All 9 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.surfnet.nl: "This is a SURFnet nameserver - dns-beheer@surfnet.nl"; ns1.zurich.surf.net: "This is a SURFnet nameserver - dns-beheer@surf.nl"; ns2.surfnet.nl: "This is a SURFnet nameserver - dns-beheer@surfnet.nl"; ns3.surfnet.nl: "This is a SURFnet nameserver - dns-beheer@surfnet.nl".
    #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 2023163114 · primary ns1.rocva.nl

Found

Primary (MNAME)
ns1.rocva.nl
Contact (RNAME)
admin.rocva.nl
Serial
2023163114
Refresh / retry
3600 s / 360 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.rocva.nl (145.100.65.10)2023163114
ns1.surfnet.nl (192.87.106.101)2023163114
ns1.surfnet.nl (2001:610:1:800a:192:87:106:101)2023163114
ns1.zurich.surf.net (195.176.255.9)2023163114
ns1.zurich.surf.net (2001:620:0:9::1103)2023163114
ns2.surfnet.nl (192.87.36.2)2023163114
ns2.surfnet.nl (2001:610:3:200a:192:87:36:2)2023163114
ns3.surfnet.nl (195.169.124.71)2023163114
ns3.surfnet.nl (2001:610:0:800c:195:169:124:71)2023163114

Checks

  • ✓ Serial 2023163114 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 6m, expire 28d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.rocva.nl is one of the listed nameservers.
  • ✓ Contact admin@rocva.nl #25
    The SOA RNAME admin.rocva.nl means admin@rocva.nl.
  • ✓ Timestamp serial #26
    The serial 2023163114 is a Unix timestamp (2034-02-10 05:45 UTC).

DNSSEC

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
22529RSASHA256 (8)SHA256 84F54175BE5CCC16…yes
45250RSASHA256 (8)SHA256 4CF327BAB0EB0815…NO

DNSKEY in the zone

Key tagRoleAlgorithm
22529KSK (257)RSASHA256 (8)
6915ZSK (256)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 45250 (SHA256). That is normal during a key rollover; otherwise remove them.
    #28
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 97h0m0s and created on demand; the current one was made at 2026-10-22 08:28 UTC and expires at 2026-10-26 09:28 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

info

21 records at the apex

Found

Read from
145.100.65.10:53
TypeValueTTL
SOAns1.rocva.nl. admin.rocva.nl. 2023163114 3600 360 2419200 90028800
NSns1.zurich.surf.net.28800
NSns1.surfnet.nl.28800
NSns3.surfnet.nl.28800
NSns2.surfnet.nl.28800
NSns1.rocva.nl.28800
A145.100.71.14228800
MX10 rocva-nl.mail.protection.outlook.com.28800
TXT"MoK5M6zRGKgJh2jHzaBuK8wEMB1Yq0oPs4NUnRCaNSKFbyKzwUNOPQxAZK5deWH0"28800
TXT"HARICA-VpsY2sYQk2s6iMcdcMR"28800
TXT"3YkejGSub7i4sXiMtcaFL10OUNsKSy5wBVh8t4HnPCW2LjTkDA3uRyeWMMYcfW2N"28800
TXT"WnLhlx1dlb0pgRxrl6ODY671KBMZtwOIr8MgBudSe9tILTrgTCYJ3jsHYygO5OVM"28800
TXT"geGfCErcMfYfGzXu05r1FuEvhC3DYAjWOuiU08VHpJq4uQKLXebk0B0xQIRBfL0B"28800
TXT"infoblox-domain-mastery=05c74ff6306a9e6a92d8cb512e319e2c4d2935d7c0a15d17cb7368609d57074a83"28800
TXT"HARICA-2jaejE9kd3NdhFeAbYz"28800
TXT"v=spf1 include:spf.protection.outlook.com ip4:145.100.65.12 include:block.rocva.nl include:block2.rocva.nl -all"28800
TXT"bwWBGzgWQYTeNHmUrUIddk3YGfnLjCNcMtauFVyJlUqCbKTrHyNrLdoRLkmYc50E"28800
TXT"Yld4hQKaktnNSIcPFNxXt7gCqfGph4cmgFyj56mKwokoQzSd2FLOpU1pASsxTXwz"28800
TXT"67630MDHkFSlmesIiqeD9VQM6DSQbat9dWr7qYMyCYTjnWkoOqLKkJfaJXSkW7Px"28800
TXT"cxxXCSOcpRV3EoUaD2ndY4FwKVjILyxQvLgKFPf5C1w0f9HS6QJVKCeWtQGorm3U"28800
TXT"RMejvpkJtJr3NWS9P5vvbeEevbpQz9tfOjyUEJbImX73rlzOIee5IjWoXDa6yNYi"28800

Checks

  • ✓ TTLs within range #32
    TTLs: A 8h, MX 8h, NS 8h. The NS TTL at the parent is 1h and in the zone 8h; 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