coc.nl

Checked 21 October 2026, 21:00 UTC · via 8.8.8.8
!Passed with warnings
24 passed 1 warning 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/coc.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/coc.nl returned HTTP 429
    #3

Delegation

info

patrick.ns.cloudflare.com, priscilla.ns.cloudflare.com

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
patrick.ns.cloudflare.com, priscilla.ns.cloudflare.com
NS in the zone
patrick.ns.cloudflare.com, priscilla.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
patrick.ns.cloudflare.com108.162.195.200 162.159.44.200 172.64.35.200 2803:f800:50::6ca2:c3c8 2606:4700:58::a29f:2cc8 2a06:98c1:50::ac40:23c8AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
priscilla.ns.cloudflare.com108.162.194.189 172.64.34.189 162.159.38.189 2803:f800:50::6ca2:c2bd 2a06:98c1:50::ac40:22bd 2606:4700:50::a29f:26bdAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: patrick.ns.cloudflare.com, priscilla.ns.cloudflare.com.
    #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 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 12 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 .com
    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

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
patrick.ns.cloudflare.com 108.162.195.200NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
patrick.ns.cloudflare.com 162.159.44.200NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
patrick.ns.cloudflare.com 172.64.35.200NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
patrick.ns.cloudflare.com 2803:f800:50::6ca2:c3c8NOERROR, 22 ms, authoritativenoyes / yesrefused2026.10.2
patrick.ns.cloudflare.com 2606:4700:58::a29f:2cc8NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
patrick.ns.cloudflare.com 2a06:98c1:50::ac40:23c8NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
priscilla.ns.cloudflare.com 108.162.194.189NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
priscilla.ns.cloudflare.com 172.64.34.189NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
priscilla.ns.cloudflare.com 162.159.38.189NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
priscilla.ns.cloudflare.com 2803:f800:50::6ca2:c2bdNOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
priscilla.ns.cloudflare.com 2a06:98c1:50::ac40:22bdNOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
priscilla.ns.cloudflare.com 2606:4700:50::a29f:26bdNOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 12 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: patrick.ns.cloudflare.com: "2026.10.2"; priscilla.ns.cloudflare.com: "2026.10.2". 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

pass

serial 2417429701 · primary patrick.ns.cloudflare.com

Found

Primary (MNAME)
patrick.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417429701
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
patrick.ns.cloudflare.com (108.162.195.200)2417429701
patrick.ns.cloudflare.com (162.159.44.200)2417429701
patrick.ns.cloudflare.com (172.64.35.200)2417429701
patrick.ns.cloudflare.com (2803:f800:50::6ca2:c3c8)2417429701
patrick.ns.cloudflare.com (2606:4700:58::a29f:2cc8)2417429701
patrick.ns.cloudflare.com (2a06:98c1:50::ac40:23c8)2417429701
priscilla.ns.cloudflare.com (108.162.194.189)2417429701
priscilla.ns.cloudflare.com (172.64.34.189)2417429701
priscilla.ns.cloudflare.com (162.159.38.189)2417429701
priscilla.ns.cloudflare.com (2803:f800:50::6ca2:c2bd)2417429701
priscilla.ns.cloudflare.com (2a06:98c1:50::ac40:22bd)2417429701
priscilla.ns.cloudflare.com (2606:4700:50::a29f:26bd)2417429701

Checks

  • ✓ Serial 2417429701 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver patrick.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417429701 is a Unix timestamp (2046-08-09 12:15 UTC).

DNSSEC

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 01FCC1925FE1CECA…yes
2467RSASHA256 (8)SHA256 E79507023855060B…NO

DNSKEY in the zone

Key tagRoleAlgorithm
2371KSK (257)ECDSAP256SHA256 (13)
34505ZSK (256)ECDSAP256SHA256 (13)

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 2467 (SHA256). That is normal during a key rollover; otherwise remove them.
    #28
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-20 20:00 UTC and expires at 2026-10-22 22:00 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

13 records at the apex

Found

Read from
108.162.195.200:53
TypeValueTTL
SOApatrick.ns.cloudflare.com. dns.cloudflare.com. 2417429701 10000 2400 604800 18001800
NSpatrick.ns.cloudflare.com.86400
NSpriscilla.ns.cloudflare.com.86400
A172.66.153.77300
A104.20.16.248300
AAAA2606:4700:10::ac42:994d300
AAAA2606:4700:10::6814:10f8300
MX0 coc-nl.mail.eo.outlook.com.300
TXT"canva-site-verification=qPhQkLMo57tLVBxaDYnmag"300
TXT"google-site-verification=5KN1L1dY59jaBRi7xG66y8MtTThS5OoceEM9qFbvjPY"300
TXT"google-site-verification=P5rhSbo_HIPTcFZJzSjZ-sOWL251HLDro1uco_OQQ1o"300
TXT"google-site-verification=jqIq7Nymhc83L1zpWnaRRssaSToqzUE4ZBBxbpbvn_c"300
TXT"v=spf1 a mx include:spf.protection.outlook.com include:_spf.salesforce.com include:spf.afas.online include:spf-de.emailsignatures365.com include:_spf.elonisas.nl include:servers.mcsv.net ip4:195.8.222.33 ip4:217.67.229.221 -all"300

Checks

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