zorgenzekerheid.nl

Checked 22 October 2026, 17:31 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/zorgenzekerheid.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/zorgenzekerheid.nl returned HTTP 429
    #3

Delegation

info

ns1.zorgenzekerheid.nl, ns2.zorgenzekerheid.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.zorgenzekerheid.nl, ns2.zorgenzekerheid.nl
NS in the zone
ns1.zorgenzekerheid.nl, ns2.zorgenzekerheid.nl
NameserverAddressesNetwork (AS)Glue
ns1.zorgenzekerheid.nl94.247.76.53 2a02:ca0:3::53AS8587 Infracom-AS - Infracom Holding B.V., NL AS8587 Infracom-AS - Infracom Holding B.V., NL94.247.76.53 2a02:ca0:3::53
ns2.zorgenzekerheid.nl94.247.73.52 2a02:ca0:2::52AS8587 Infracom-AS - Infracom Holding B.V., NL AS8587 Infracom-AS - Infracom Holding B.V., NL94.247.73.52 2a02:ca0:2::52

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.zorgenzekerheid.nl, ns2.zorgenzekerheid.nl.
    #6
  • ✓ 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.zorgenzekerheid.nl, ns2.zorgenzekerheid.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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS8587 (Infracom-AS - Infracom Holding B.V., NL): 4 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 .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
ns1.zorgenzekerheid.nl 94.247.76.53NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns1.zorgenzekerheid.nl 2a02:ca0:3::53NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns2.zorgenzekerheid.nl 94.247.73.52NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns2.zorgenzekerheid.nl 2a02:ca0:2::52NOERROR, 11 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 2026092300 · primary ns2.zorgenzekerheid.nl

Found

Primary (MNAME)
ns2.zorgenzekerheid.nl
Contact (RNAME)
dom-reg.infracom.nl
Serial
2026092300
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
8640 s

Serial per nameserver

NameserverSerial
ns1.zorgenzekerheid.nl (94.247.76.53)2026092300
ns1.zorgenzekerheid.nl (2a02:ca0:3::53)2026092300
ns2.zorgenzekerheid.nl (94.247.73.52)2026092300
ns2.zorgenzekerheid.nl (2a02:ca0:2::52)2026092300

Checks

  • ✓ Serial 2026092300 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 144m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns2.zorgenzekerheid.nl is one of the listed nameservers.
  • ✓ Contact dom-reg@infracom.nl #25
    The SOA RNAME dom-reg.infracom.nl means dom-reg@infracom.nl.
  • ✓ Date-based serial #26
    The serial 2026092300 follows the YYYYMMDDnn convention (2026-09-23).

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
14956RSASHA256 (8)SHA256 7EB001BB3A358B69…yes

DNSKEY in the zone

Key tagRoleAlgorithm
14956KSK (257)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 14956 (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

pass

27 records at the apex

Found

Read from
94.247.76.53:53
TypeValueTTL
SOAns2.zorgenzekerheid.nl. dom-reg.infracom.nl. 2026092300 28800 7200 604800 86403600
NSns2.zorgenzekerheid.nl.3600
NSns1.zorgenzekerheid.nl.3600
A54.93.191.2043600
MX0 zorgenzekerheid-nl.d-v1.mx.microsoft.300
TXT"v=spf1 ip4:94.228.136.149 ip4:193.173.52.130 ip4:143.55.148.111 ip4:143.55.145.195 include:_spf.zivver.com include:spf.afas.online include:spf.protection.outlook.com include:_spf.spotler.email include:_spf.salesforce.com include:spf.mandrillapp.com includ" "e:_spf.emply.com include:spf.flowmailer.net include:spf.mailjet.com -all"3600
TXT"MS=ms84515845"3600
TXT"MS=ms98621230"3600
TXT"Z1EH16bBie5BkcxYFH4GY9I3mLkAjiXk0pp2/GzwSnU="3600
TXT"google-site-verification=333rf3BVSAGpZ--sdFqEXGHNSZ8iyxRT5tzsOzvoRLk"3600
TXT"tmes=425bb3d80ba646adeb76801d5b74524d"3600
TXT"amazonses:D9IlburyDS8EduVmrkG2kiVzjtpKjxJ5Xf2YbfUsF9w="3600
TXT"atlassian-domain-verification=WaidD7zGABQBWwD3VN9GGHWrSuAORPIp0P5KtQxN14Fbj74HVeU9snG8dJyxOfvS"3600
TXT"atlassian-sending-domain-verification=27d18f46-eecc-4d1b-9d67-ca8458813b5e"3600
TXT"_udgn7tuxeij6gfjge41xk5pmp38m0eg"3600
TXT"_4s71u99kyga1h9hlxn0iv7d26b0dp2s"3600
TXT"hpe-greenlake-domain-verification=68376c335a2d36502d5a647579464a6f65726b6e587762304a3465776b323975"3600
TXT"_zo9w0rm0kaxnl8cl6xe9qtoaj7imd09"3600
TXT"_szbdfq87fi8mu77l9maixhxim5raftx"3600
TXT"apple-domain-verification=9JlIa6ReBbbGplp2"3600
TXT"_1qu0cu7zh7md85bzikf6shiytyxley8zorgenzek"3600
TXT"_067p8l18yfp5pmqir7uu5bfuzr8zkco"3600
TXT"miro-verification=2890e4a72927adb5ff84bad64eeedb68f354bd29"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "sectigo.com"3600
CAA0 issue "digicert.com"3600
CAA0 issue "kpn.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 5m, NS 1h.
  • ✓ 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: letsencrypt.org, sectigo.com, digicert.com, kpn.com.