roc.nl

Checked 22 October 2026, 15:41 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 4 info

Registration

info

.nl country-code

Found

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

Delegation

warn

ns4.8m.nl, ns5.8m.nl, ns6.8m.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns4.8m.nl, ns5.8m.nl, ns6.8m.nl
NS in the zone
ns4.8m.nl, ns5.8m.nl, ns6.8m.nl
NameserverAddressesNetwork (AS)Glue
ns4.8m.nl212.178.67.139AS33915 TNF-AS - Vodafone Libertel B.V., NL212.178.67.139
ns5.8m.nl83.149.86.106AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL83.149.86.106
ns6.8m.nl85.17.2.235AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL85.17.2.235

Checks

  • ✓ 3 nameservers #6
    Delegated to ns4.8m.nl, ns5.8m.nl, ns6.8m.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 3 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS33915 (TNF-AS - Vodafone Libertel B.V., NL): 1 address; AS60781 (LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL): 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns4.8m.nl 212.178.67.139NOERROR, 20 ms, authoritativenoyes / yesrefused-
ns5.8m.nl 83.149.86.106NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns6.8m.nl 85.17.2.235NOERROR, 10 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 3 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

warn

serial 1585821479 · primary ns6.8m.nl

Found

Primary (MNAME)
ns6.8m.nl
Contact (RNAME)
postmaster.roc.nl
Serial
1585821479
Refresh / retry
900 s / 3600 s
Expire
604800 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns4.8m.nl (212.178.67.139)1585821479
ns5.8m.nl (83.149.86.106)1585821479
ns6.8m.nl (85.17.2.235)1585821479

Checks

  • ✓ Serial 1585821479 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d; retry 1h should be shorter than refresh 15m. Current values: refresh 15m, retry 1h, expire 7d, negative TTL 15m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns6.8m.nl is one of the listed nameservers.
  • ✓ Contact postmaster@roc.nl #25
    The SOA RNAME postmaster.roc.nl means postmaster@roc.nl.
  • ✓ Timestamp serial #26
    The serial 1585821479 is a Unix timestamp (2020-04-02 09:57 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

15 records at the apex

Found

Read from
212.178.67.139:53
TypeValueTTL
SOAns6.8m.nl. postmaster.roc.nl. 1585821479 900 3600 604800 900300
NSns6.8m.nl.600
NSns5.8m.nl.600
NSns4.8m.nl.600
A83.149.86.90600
MX10 mx.spamexperts.com.600
MX30 lastmx.spamexperts.net.600
MX20 fallbackmx.spamexperts.eu.600
TXT"google-site-verification=6_BuvaOUOt9iw6A69_wQD7SCO3bwcpFJyFz1WdgreA4"300
TXT"MS=ms21468449"300
TXT"MS=6EB34327F34603F8892DE6EB1BD9C93E807897DA"300
TXT"57q19ocl810ek6d19fi7s9f8nf"300
TXT"v=spf1 ip4:212.178.67.0/24 ip4:83.149.86.0/24 ip4:212.178.64.254 include:spf.8m.nl include:spf.protection.outlook.com ?all"300
TXT"qq3fcci1oecq4hqcmdut411ab2"300
TXT"jt7spoqstgkrfcsvu56h4slspu"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 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