unica.nl

Checked 22 October 2026, 16:50 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 6 info

Registration

info

.nl country-code

Found

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

Delegation

info

kelly.ns.cloudflare.com, zahir.ns.cloudflare.com

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
kelly.ns.cloudflare.com, zahir.ns.cloudflare.com
NS in the zone
kelly.ns.cloudflare.com, zahir.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
kelly.ns.cloudflare.com108.162.194.91 162.159.38.91 172.64.34.91 2a06:98c1:50::ac40:225b 2803:f800:50::6ca2:c25b 2606:4700:50::a29f:265bAS13335 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-
zahir.ns.cloudflare.com108.162.195.145 162.159.44.145 172.64.35.145 2606:4700:58::a29f:2c91 2a06:98c1:50::ac40:2391 2803:f800:50::6ca2:c391- 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: kelly.ns.cloudflare.com, zahir.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): 11 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
kelly.ns.cloudflare.com 108.162.194.91NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 162.159.38.91NOERROR, 33 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 172.64.34.91NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 2a06:98c1:50::ac40:225bNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 2803:f800:50::6ca2:c25bNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 2606:4700:50::a29f:265bNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
zahir.ns.cloudflare.com 108.162.195.145NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
zahir.ns.cloudflare.com 162.159.44.145NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
zahir.ns.cloudflare.com 172.64.35.145NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
zahir.ns.cloudflare.com 2606:4700:58::a29f:2c91NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
zahir.ns.cloudflare.com 2a06:98c1:50::ac40:2391NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
zahir.ns.cloudflare.com 2803:f800:50::6ca2:c391NOERROR, 15 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: kelly.ns.cloudflare.com: "2026.10.2"; zahir.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 2418166771 · primary kelly.ns.cloudflare.com

Found

Primary (MNAME)
kelly.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418166771
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
kelly.ns.cloudflare.com (108.162.194.91)2418166771
kelly.ns.cloudflare.com (162.159.38.91)2418166771
kelly.ns.cloudflare.com (172.64.34.91)2418166771
kelly.ns.cloudflare.com (2a06:98c1:50::ac40:225b)2418166771
kelly.ns.cloudflare.com (2803:f800:50::6ca2:c25b)2418166771
kelly.ns.cloudflare.com (2606:4700:50::a29f:265b)2418166771
zahir.ns.cloudflare.com (108.162.195.145)2418166771
zahir.ns.cloudflare.com (162.159.44.145)2418166771
zahir.ns.cloudflare.com (172.64.35.145)2418166771
zahir.ns.cloudflare.com (2606:4700:58::a29f:2c91)2418166771
zahir.ns.cloudflare.com (2a06:98c1:50::ac40:2391)2418166771
zahir.ns.cloudflare.com (2803:f800:50::6ca2:c391)2418166771

Checks

  • ✓ Serial 2418166771 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 kelly.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 2418166771 is a Unix timestamp (2046-08-18 00:59 UTC).

DNSSEC

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 0332D4DCB16AE447…yes

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.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 2371 (SHA256).
  • ✓ 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 2026-10-21 15:50 UTC and expires at 2026-10-23 17:50 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

warn

35 records at the apex

Found

Read from
108.162.194.91:53
TypeValueTTL
SOAkelly.ns.cloudflare.com. dns.cloudflare.com. 2418166771 10000 2400 604800 18001800
NSkelly.ns.cloudflare.com.86400
NSzahir.ns.cloudflare.com.86400
A104.26.3.60300
A172.67.72.12300
A104.26.2.60300
AAAA2606:4700:20::ac43:480c300
AAAA2606:4700:20::681a:23c300
AAAA2606:4700:20::681a:33c300
MX0 unica-nl.c-v1.mx.microsoft.60
TXT"05b3758982afd72372ca975b077e3a0cc0d9daf6f2caf30edbca9c8212f89f10"60
TXT"DomainVerification=2RAWBLTY4EFNO5HPQC90XBKM28OEP0P8SWWKSY5OMQMMZSQ0LN7T7AKM6RZESEEJ"60
TXT"_globalsign-domain-verification=3vOYcAHOojx0ELGjKSQbRM2NYC3OTT_UHFx9Jury1S"60
TXT"apple-domain-verification=N6ACnk2pEEvIREbS"60
TXT"bluebeam-verification=ddtluyu6s6l6kp412sakh5xdmmkhje"60
TXT"brevo-code:ca38b1cb3ea48862b08c36bc27252b09"60
TXT"d365mktkey=6oynto260ga68nyt32uf6yxjl"60
TXT"d365mktkey=8EDxGkxxXYvd7amxEVPCmGF7mwMqgP5A5aMdJvWlFp0x"60
TXT"google-site-verification=JUrnPISWbDTWIdBgRZg0K1thD9kcHbGVAtpoWWPdTQA"60
TXT"google-site-verification=cj_59o8eiBMDR8CQNSC5S22v1j9PXc1H3k8eyWMqKGU"60
TXT"hj=unica-18052021"60
TXT"msfpkey=6db0ohyhmtq91wlxn4dontaru"60
TXT"v=spf1 ip6:2001:b88:1002::10 ip4:46.254.126.174 ip4:52.149.108.44 ip4:20.82.122.152 ip4:213.207.89.112 ip4:77.60.85.18 ip4:136.144.128.26 ip4:145.131.225.132 ip4:145.131.225.156 ip4:195.74.87.204 include:spf.protection.outlook.com include:_spf.yoursite.io" " include:spf.topdesk.net include:customers.clickdimensions.com include:spf.otys.nl include:amazonses.com include:25354820.spf05.hubspotemail.net include:autotask.net ip4:212.83.210.145 ip4:80.250.140.32 ip4:89.146.30.29 ip4:148.105.8.0/21 ip4:198.2.128.0/" "18 ip4:205.201.128.0/20 -all"60
CAA0 iodef "mailto:webmaster@unica.nl"600
CAA0 issue "comodoca.com"600
CAA0 issue "digicert.com; cansignhttpexchanges=yes"600
CAA0 issue "letsencrypt.org"600
CAA0 issue "pki.goog; cansignhttpexchanges=yes"600
CAA0 issue "sectigo.com"600
CAA0 issue "ssl.com"600
CAA0 issuewild "comodoca.com"600
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"600
CAA0 issuewild "letsencrypt.org"600
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"600
CAA0 issuewild "ssl.com"600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: MX (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 1d; resolvers may use either.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, letsencrypt.org, pki.goog, sectigo.com, ssl.com.