enschede.nl

Checked 21 October 2026, 21:15 UTC · via 8.8.8.8
!Passed with warnings
29 passed 2 warnings 0 failed 4 info

Registration

info

.nl country-code · Previder B.V.

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Previder B.V.
Registered
16 August 1995
Last changed
6 June 2023
Status
active
Registry nameservers
nsauth1.introweb.nl, nsauth2.introweb.nl, nsauth3.introweb.net
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

pass

nsauth1.introweb.nl, nsauth2.introweb.nl, nsauth3.introweb.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
nsauth1.introweb.nl, nsauth2.introweb.nl, nsauth3.introweb.net
NS in the zone
nsauth1.introweb.nl, nsauth2.introweb.nl, nsauth3.introweb.net
NameserverAddressesNetwork (AS)Glue
nsauth1.introweb.nl80.65.96.48 2001:1690:1:a::aAS20847 PREVIDER-AS - Previder B.V., NL AS20847 PREVIDER-AS - Previder B.V., NL80.65.96.48 2001:1690:1:a::a
nsauth2.introweb.nl86.105.160.91 2a0d:8600:1::5aAS205185 DCSPINE - Eurofiber Cloud Infra B.V., NL AS205185 DCSPINE - Eurofiber Cloud Infra B.V., NL86.105.160.91 2a0d:8600:1::5a
nsauth3.introweb.net62.165.127.221 2001:1690:1:c::aAS20847 PREVIDER-AS - Previder B.V., NL AS20847 PREVIDER-AS - Previder B.V., NL-

Checks

  • ✓ 3 nameservers #6
    Delegated to nsauth1.introweb.nl, nsauth2.introweb.nl, nsauth3.introweb.net.
  • ✓ 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 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS205185 (DCSPINE - Eurofiber Cloud Infra B.V., NL): 2 addresses; AS20847 (PREVIDER-AS - Previder B.V., NL): 4 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .net, .nl.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
nsauth1.introweb.nl 80.65.96.48NOERROR, 10 ms, authoritativenoyes / yesrefusedPowerDNS 3.11 for Workgroups
nsauth1.introweb.nl 2001:1690:1:a::aNOERROR, 11 ms, authoritativenoyes / yesrefusedPowerDNS 3.11 for Workgroups
nsauth2.introweb.nl 86.105.160.91NOERROR, 14 ms, authoritativenoyes / yesrefusedPowerDNS 3.11 for Workgroups
nsauth2.introweb.nl 2a0d:8600:1::5aNOERROR, 14 ms, authoritativenoyes / yesrefusedPowerDNS 3.11 for Workgroups
nsauth3.introweb.net 62.165.127.221NOERROR, 10 ms, authoritativenoyes / yesrefusedPowerDNS 3.11 for Workgroups
nsauth3.introweb.net 2001:1690:1:c::aNOERROR, 10 ms, authoritativenoyes / yesrefusedPowerDNS 3.11 for Workgroups

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: nsauth1.introweb.nl: "PowerDNS 3.11 for Workgroups"; nsauth2.introweb.nl: "PowerDNS 3.11 for Workgroups"; nsauth3.introweb.net: "PowerDNS 3.11 for Workgroups". 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 2023011801 · primary nsauth1.introweb.nl

Found

Primary (MNAME)
nsauth1.introweb.nl
Contact (RNAME)
postmaster.introweb.nl
Serial
2023011801
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
nsauth1.introweb.nl (80.65.96.48)2023011801
nsauth1.introweb.nl (2001:1690:1:a::a)2023011801
nsauth2.introweb.nl (86.105.160.91)2023011801
nsauth2.introweb.nl (2a0d:8600:1::5a)2023011801
nsauth3.introweb.net (62.165.127.221)2023011801
nsauth3.introweb.net (2001:1690:1:c::a)2023011801

Checks

  • ✓ Serial 2023011801 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver nsauth1.introweb.nl is one of the listed nameservers.
  • ✓ Contact postmaster@introweb.nl #25
    The SOA RNAME postmaster.introweb.nl means postmaster@introweb.nl.
  • ✓ Date-based serial #26
    The serial 2023011801 follows the YYYYMMDDnn convention (2023-01-18).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
1 iterations, 1-byte salt
Signatures valid until
29 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2141RSASHA256 (8)SHA256 643A726F1F0A7F0E…yes
64095RSASHA256 (8)SHA256 3890E5CE032A722B…yes

DNSKEY in the zone

Key tagRoleAlgorithm
64095ZSK (256)RSASHA256 (8)
2141KSK (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 2141 (SHA256), key tag 64095 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Signatures valid until 2026-10-29 #30
    The earliest DNSKEY/SOA signature expires at 2026-10-29 00:00 UTC.
  • !
    NSEC3 with extra iterations or salt
    NSEC3 uses 1 iteration and a 1-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.
    #31

Records

info

19 records at the apex

Found

Read from
80.65.96.48:53
TypeValueTTL
SOAnsauth1.introweb.nl. postmaster.introweb.nl. 2023011801 28800 7200 604800 864003600
NSnsauth3.introweb.net.86400
NSnsauth1.introweb.nl.86400
NSnsauth2.introweb.nl.86400
A20.56.66.61300
MX10 enschede-nl.j-v1.mx.microsoft.3600
TXT"mentimeter-499f5bbc-5779-41ba-8a9a-92d66bba1c4c"300
TXT"adobe-idp-site-verification=5f4a0b3a19f336111f18ed346ecdba6a38133e5a3c6f31fdc40ba0f4cc66dff0"300
TXT"v=spf1 include:9iummh35yj.powerspf.com include:spf.flowmailer.net include:spf.topdesk.net include:spf.protection.outlook.com -all"300
TXT"vmware-cloud-verification-ef6db04e-4310-49a0-b316-77bed01e04a0"300
TXT"DomainVerification=3K885R3WZYKM4HUEAXJM7WL16E8N817NDOW72EI2JAG69G8IK2A12VYTY130KJOH"300
TXT"atlassian-domain-verification=SrHb/ErpMX/BmGdSmevlsSSNxaDNOErm6vwaEGKvWzvId/RMargfZbnksXrLYia9"300
TXT"autodesk-domain-verification=DrgQqnywHNftDe8m7dQw"300
TXT"7Ag1jbSZ5Jg1Vj3DA0qmWWbDSz4zuowjfLbZ0fiGXMzCK8MxZ/J49enDoMjGlDndUwKUnWuYLf2hJNf2LDjtkQ=="300
TXT"Yws-Mac-037"300
TXT"apple-domain-verification=ZLVq3CpexxJXUsSe"300
TXT"WJwELTTPZneTk46UUIk63P3R54ZEOKnqgYORi2JgAQMc2PY4+HTm7pkdiHmMbuoyCMTBkQ48Y5iYyy8JIdzj+Q=="300
TXT"google-site-verification=T_pBEvbV1v141KSFKGpApTFOGQfe0Xebhb3B0CxJ3jc"300
TXT"MS=ms35549884"300

Checks

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