knnv.nl

Checked 22 October 2026, 14:03 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 6 info

Registration

info

.nl country-code · Max.nl B.V.

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Max.nl B.V.
Registered
26 August 1998
Last changed
10 February 2021
Status
active
Registry nameservers
ns1.max.nl, ns2.max.nl
RDAP server
https://rdap.sidn.nl/

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
    Expiry date not published
    The registry does not publish the expiry date in RDAP. Check it with your registrar.
    #3
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns1.max.nl, ns2.max.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.max.nl, ns2.max.nl
NS in the zone
ns1.max.nl, ns2.max.nl
NameserverAddressesNetwork (AS)Glue
ns1.max.nl83.137.18.111 2001:4038:200:41::111AS31383 NEDERLANDNET-AS - Computel Standby BV, NL AS31383 NEDERLANDNET-AS - Computel Standby BV, NL83.137.18.111 2001:4038:200:41::111
ns2.max.nl37.97.128.11 2a01:7c8:aaae:503::1AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL37.97.128.11 2a01:7c8:aaae:503::1

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.max.nl, ns2.max.nl.
    #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 2 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20857 (TRANSIP-AS - Signet B.V., NL): 2 addresses; AS31383 (NEDERLANDNET-AS - Computel Standby BV, 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.max.nl 83.137.18.111NOERROR, 10 ms, authoritativenoyes / yesrefused0.0.0
ns1.max.nl 2001:4038:200:41::111NOERROR, 14 ms, authoritativenoyes / yesrefused0.0.0
ns2.max.nl 37.97.128.11NOERROR, 11 ms, authoritativenoyes / yesrefused0.0.0
ns2.max.nl 2a01:7c8:aaae:503::1NOERROR, 11 ms, authoritativenoyes / yesrefused0.0.0

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.max.nl: "0.0.0"; ns2.max.nl: "0.0.0". 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

warn

serial 2026082101 · primary ns1.max.nl

Found

Primary (MNAME)
ns1.max.nl
Contact (RNAME)
beheer.max.nl
Serial
2026082101
Refresh / retry
14400 s / 1800 s
Expire
86400 s
Negative TTL
10800 s

Serial per nameserver

NameserverSerial
ns1.max.nl (83.137.18.111)2026082101
ns1.max.nl (2001:4038:200:41::111)2026082101
ns2.max.nl (37.97.128.11)2026082101
ns2.max.nl (2a01:7c8:aaae:503::1)2026082101

Checks

  • ✓ Serial 2026082101 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 4h, retry 30m, expire 1d, negative TTL 3h.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.max.nl is one of the listed nameservers.
  • ✓ Contact beheer@max.nl #25
    The SOA RNAME beheer.max.nl means beheer@max.nl.
  • ✓ Date-based serial #26
    The serial 2026082101 follows the YYYYMMDDnn convention (2026-08-21).

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

9 records at the apex

Found

Read from
83.137.18.111:53
TypeValueTTL
SOAns1.max.nl. beheer.max.nl. 2026082101 14400 1800 86400 10800300
NSns2.max.nl.300
NSns1.max.nl.300
A83.137.19.163300
AAAA2001:4038:200:44::163300
MX10 mail.knnv.nl.300
TXT"v=DMARC1;p=none;"300
TXT"MS=ms64595955"300
TXT"v=spf1 include:_spf.max.nl include:servers.mcsv.net include:_spf.e-boekhouden.nl include:procurios.cloud include:spf.myfasthosting.com ~all"300

Checks

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