pretwerk.nl

Checked 22 October 2026, 15:20 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 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/pretwerk.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/pretwerk.nl returned HTTP 429
    #3

Delegation

info

nms01.hostingforyou.nl, nms02.hostingforyou.nl, nms03.hosting4you.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
nms01.hostingforyou.nl, nms02.hostingforyou.nl, nms03.hosting4you.nl
NS in the zone
nms01.hostingforyou.nl, nms02.hostingforyou.nl, nms03.hosting4you.nl
NameserverAddressesNetwork (AS)Glue
nms01.hostingforyou.nl31.210.16.131 2a03:ec80:0:100:131::AS211220 H4Y-SR-POOL0 - Hostingforyou B.V., NL AS211220 H4Y-SR-POOL0 - Hostingforyou B.V., NL31.210.16.131 2a03:ec80:0:100:131::
nms02.hostingforyou.nl37.97.247.87 2a01:7c8:fffa:c4:5054:ff:fe05:28a4AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL37.97.247.87 2a01:7c8:fffa:c4:5054:ff:fe05:28a4
nms03.hosting4you.nl62.171.177.251 2a02:c207:2044:3050::1AS51167 CONTABO - Contabo GmbH, DE AS51167 CONTABO - Contabo GmbH, DE62.171.177.251 2a02:c207:2044:3050::1

Checks

  • ✓ 3 nameservers #6
    Delegated to nms01.hostingforyou.nl, nms02.hostingforyou.nl, nms03.hosting4you.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.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS20857 (TRANSIP-AS - Signet B.V., NL): 2 addresses; AS211220 (H4Y-SR-POOL0 - Hostingforyou B.V., NL): 2 addresses; AS51167 (CONTABO - Contabo GmbH, DE): 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

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
nms01.hostingforyou.nl 31.210.16.131NOERROR, 12 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.2.1
nms01.hostingforyou.nl 2a03:ec80:0:100:131::NOERROR, 11 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.2.1
nms02.hostingforyou.nl 37.97.247.87NOERROR, 11 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.2.1
nms02.hostingforyou.nl 2a01:7c8:fffa:c4:5054:ff:fe05:28a4NOERROR, 11 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.2.1
nms03.hosting4you.nl 62.171.177.251NOERROR, 9 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.2.1
nms03.hosting4you.nl 2a02:c207:2044:3050::1NOERROR, 7 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.2.1

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: nms01.hostingforyou.nl: "PowerDNS Authoritative Server 4.2.1"; nms02.hostingforyou.nl: "PowerDNS Authoritative Server 4.2.1"; nms03.hosting4you.nl: "PowerDNS Authoritative Server 4.2.1". 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 2026102201 · primary nms01.hostingforyou.nl

Found

Primary (MNAME)
nms01.hostingforyou.nl
Contact (RNAME)
support.hostingforyou.nl
Serial
2026102201
Refresh / retry
14400 s / 1800 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
nms01.hostingforyou.nl (31.210.16.131)2026102201
nms01.hostingforyou.nl (2a03:ec80:0:100:131::)2026102201
nms02.hostingforyou.nl (37.97.247.87)2026102201
nms02.hostingforyou.nl (2a01:7c8:fffa:c4:5054:ff:fe05:28a4)2026102201
nms03.hosting4you.nl (62.171.177.251)2026102201
nms03.hosting4you.nl (2a02:c207:2044:3050::1)2026102201

Checks

  • ✓ Serial 2026102201 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 30m, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver nms01.hostingforyou.nl is one of the listed nameservers.
  • ✓ Contact support@hostingforyou.nl #25
    The SOA RNAME support.hostingforyou.nl means support@hostingforyou.nl.
  • ✓ Date-based serial #26
    The serial 2026102201 follows the YYYYMMDDnn convention (2026-10-22).

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
31558ECDSAP256SHA256 (13)SHA256 E45828EAF2351A54…yes

DNSKEY in the zone

Key tagRoleAlgorithm
31558KSK (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 31558 (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

11 records at the apex

Found

Read from
31.210.16.131:53
TypeValueTTL
SOAnms01.hostingforyou.nl. support.hostingforyou.nl. 2026102201 14400 1800 604800 36003600
NSnms03.hosting4you.nl.3600
NSnms01.hostingforyou.nl.3600
NSnms02.hostingforyou.nl.3600
A31.210.16.1833600
MX30 nms02.hostingforyou.nl.3600
MX20 nms01.hostingforyou.nl.3600
MX40 nms03.hostingforyou.nl.3600
MX10 iworx28.hostingforyou.nl.3600
TXT"v=spf1 mx include:spf.hostingforyou.nl include:amazonses.com -all"3600
TXT"google-site-verification=vlHUINwC1B96mL8L9zi1FkhwdV4zqiunLc6eekPJUEQ"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