zxcs-klant.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/zxcs-klant.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/zxcs-klant.nl returned HTTP 429
    #3

Delegation

pass

nsauth.zxcs.be, nsauth.zxcs.eu, nsauth.zxcs.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
nsauth.zxcs.be, nsauth.zxcs.eu, nsauth.zxcs.nl
NS in the zone
nsauth.zxcs.be, nsauth.zxcs.eu, nsauth.zxcs.nl
NameserverAddressesNetwork (AS)Glue
nsauth.zxcs.be138.68.125.166 2a03:b0c0:3:d0::116:2002AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US-
nsauth.zxcs.eu174.138.107.131 2a03:b0c0:2:d0::57:1002AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US-
nsauth.zxcs.nl185.104.28.40 2a06:2ec0:1::11AS206281 AS-ZXCS - Stichting DIGI NL, NL AS206281 AS-ZXCS - Stichting DIGI NL, NL185.104.28.40 2a06:2ec0:1::11

Checks

  • ✓ 3 nameservers #6
    Delegated to nsauth.zxcs.be, nsauth.zxcs.eu, nsauth.zxcs.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 3 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS14061 (DIGITALOCEAN-ASN - DigitalOcean, LLC, US): 4 addresses; AS206281 (AS-ZXCS - Stichting DIGI NL, NL): 2 addresses.
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .be, .eu, .nl.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
nsauth.zxcs.be 138.68.125.166NOERROR, 13 ms, authoritativenoyes / yesrefusedUnknown
nsauth.zxcs.be 2a03:b0c0:3:d0::116:2002NOERROR, 13 ms, authoritativenoyes / yesrefusedUnknown
nsauth.zxcs.eu 174.138.107.131NOERROR, 11 ms, authoritativenoyes / yesrefusedUnknown
nsauth.zxcs.eu 2a03:b0c0:2:d0::57:1002NOERROR, 13 ms, authoritativenoyes / yesrefusedUnknown
nsauth.zxcs.nl 185.104.28.40NOERROR, 10 ms, authoritativenoyes / yesrefusedUnknown
nsauth.zxcs.nl 2a06:2ec0:1::11NOERROR, 11 ms, authoritativenoyes / yesrefusedUnknown

Checks

  • ✓ All respond #14
    All 6 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: nsauth.zxcs.be: "Unknown"; nsauth.zxcs.eu: "Unknown"; nsauth.zxcs.nl: "Unknown".
    #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 2021051594 · primary nsauth.zxcs.nl

Found

Primary (MNAME)
nsauth.zxcs.nl
Contact (RNAME)
hostmaster.zxcs.nl
Serial
2021051594
Refresh / retry
10800 s / 3600 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
nsauth.zxcs.be (138.68.125.166)2021051594
nsauth.zxcs.be (2a03:b0c0:3:d0::116:2002)2021051594
nsauth.zxcs.eu (174.138.107.131)2021051594
nsauth.zxcs.eu (2a03:b0c0:2:d0::57:1002)2021051594
nsauth.zxcs.nl (185.104.28.40)2021051594
nsauth.zxcs.nl (2a06:2ec0:1::11)2021051594

Checks

  • ✓ Serial 2021051594 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver nsauth.zxcs.nl is one of the listed nameservers.
  • ✓ Contact hostmaster@zxcs.nl #25
    The SOA RNAME hostmaster.zxcs.nl means hostmaster@zxcs.nl.
  • ✓ Date-based serial #26
    The serial 2021051594 follows the YYYYMMDDnn convention (2021-05-15).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
5 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
49828ECDSAP256SHA256 (13)SHA256 0DED3115C88B09B0…yes

DNSKEY in the zone

Key tagRoleAlgorithm
49828KSK (257)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 49828 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-11-05 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-05 00:00 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

7 records at the apex

Found

Read from
138.68.125.166:53
TypeValueTTL
SOAnsauth.zxcs.nl. hostmaster.zxcs.nl. 2021051594 10800 3600 1209600 36003600
NSnsauth.zxcs.be.3600
NSnsauth.zxcs.nl.3600
NSnsauth.zxcs.eu.3600
A185.104.28.2383600
MX10 mail-in.zxcs-klant.nl.3600
TXT"google-site-verification=MOEI7EXtro0outmlcspP3IKQa0WEVj6kv9JWUhJHfM4"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, 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.
  • 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