utrecht.nl

Checked 21 October 2026, 21:26 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 7 info

Registration

info

.nl country-code · Registrar.eu

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Registrar.eu
Registered
4 August 1995
Last changed
11 July 2025
Status
active
Registry nameservers
auth70.dns.internl.net, auth80.dns.internl.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

warn

auth70.dns.internl.net, auth80.dns.internl.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
auth70.dns.internl.net, auth80.dns.internl.net
NS in the zone
auth70.dns.internl.net, auth80.dns.internl.net
NameserverAddressesNetwork (AS)Glue
auth70.dns.internl.net77.95.250.151 2a00:1478:40:2::30:1AS43190 GL-IX-AS - Totaalnet Internet Works B.V., NL AS43190 GL-IX-AS - Totaalnet Internet Works B.V., NL-
auth80.dns.internl.net77.95.250.152 2a00:1478:40:2::31:1AS43190 GL-IX-AS - Totaalnet Internet Works B.V., NL AS43190 GL-IX-AS - Totaalnet Internet Works B.V., NL-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: auth70.dns.internl.net, auth80.dns.internl.net.
    #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 one network
    all IPv4 addresses are in 77.95.250.0/24; all IPv6 addresses are in 2a00:1478:40::/48. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS43190 (GL-IX-AS - Totaalnet Internet Works 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 .net
    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
auth70.dns.internl.net 77.95.250.151NOERROR, 13 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.1.13 (built Aug 8 2019 07:52:12 by root@0375968a661f)
auth70.dns.internl.net 2a00:1478:40:2::30:1NOERROR, 13 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.1.13 (built Aug 8 2019 07:52:12 by root@0375968a661f)
auth80.dns.internl.net 77.95.250.152NOERROR, 11 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.1.13 (built Aug 8 2019 07:52:12 by root@0375968a661f)
auth80.dns.internl.net 2a00:1478:40:2::31:1NOERROR, 11 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.1.13 (built Aug 8 2019 07:52:12 by root@0375968a661f)

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: auth70.dns.internl.net: "PowerDNS Authoritative Server 4.1.13 (built Aug 8 2019 07:52:12 by root@0375968a661f)"; auth80.dns.internl.net: "PowerDNS Authoritative Server 4.1.13 (built Aug 8 2019 07:52:12 by root@0375968a661f)". 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 2015051891 · primary auth70.dns.internl.net

Found

Primary (MNAME)
auth70.dns.internl.net
Contact (RNAME)
postmaster.utrecht.nl
Serial
2015051891
Refresh / retry
3600 s / 900 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
auth70.dns.internl.net (77.95.250.151)2015051891
auth70.dns.internl.net (2a00:1478:40:2::30:1)2015051891
auth80.dns.internl.net (77.95.250.152)2015051891
auth80.dns.internl.net (2a00:1478:40:2::31:1)2015051891

Checks

  • ✓ Serial 2015051891 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 15m, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver auth70.dns.internl.net is one of the listed nameservers.
  • ✓ Contact postmaster@utrecht.nl #25
    The SOA RNAME postmaster.utrecht.nl means postmaster@utrecht.nl.
  • ✓ Date-based serial #26
    The serial 2015051891 follows the YYYYMMDDnn convention (2015-05-18).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
29 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
16604ECDSAP256SHA256 (13)SHA256 551A6879FA6297B6…yes

DNSKEY in the zone

Key tagRoleAlgorithm
19550ZSK (256)ECDSAP256SHA256 (13)
16604KSK (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 16604 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-10-29 #30
    The earliest DNSKEY/SOA signature expires at 2026-10-29 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

pass

28 records at the apex

Found

Read from
77.95.250.151:53
TypeValueTTL
SOAauth70.dns.internl.net. postmaster.utrecht.nl. 2015051891 3600 900 604800 36003600
NSauth80.dns.internl.net.3600
NSauth70.dns.internl.net.3600
A94.228.136.1503600
MX10 utrecht-nl.h-v1.mx.microsoft.3600
TXT"include:spf.sqr.nl"3600
TXT"cisco-ci-domain-verification=6cf56ac8a39d0202e6ef214f65d68ce6ad8200851ef5ac1209d2e5d1516834ed"3600
TXT"TynWykBNFWJFegLHOgPwIVYdX1xImnuQCafIQYATmofeYOzhNn9uk9rRyUFTH7Ei"3600
TXT"bb64fca205cfc64de4d332130bd223de14022d610b14cbebc751c6e7f555b7e4"3600
TXT"86893e3ae26672a45810c400e6afe73a0ba5af0ead3b2d6a06298d64ead12036"3600
TXT"7d6098f4b1e35d3baa7e34c0bc5dc16705da633221b84611867ca4a79211fdae"3600
TXT"CkQ4Qand0/9Pt/qS6ghd8b/UPa8emW6+gP3awBUIlWf2MSywUASS16yjqzwOHVmzb7J0tw7FQEQ0+zEaC+8ILQ=="3600
TXT"6Q8KsGF5qG4mdSUgb0YQBofc0U8bofHGNDfv9T9rWjuVX9H52GofoGIGeZ5BIufFqMGekBa0dRsdtX646nuVAw=="3600
TXT"adobe-idp-site-verification=6b2c719cc24ea4eb40b0458fbe8e6394807ed6f71427dbc5d8a8856241174373"3600
TXT"ac142ac6ad665d92bbb5458ee7f307c67531a0f369bc358ea50950b4e0c14f80"3600
TXT"MS=ms73452056"3600
TXT"Uvw9qqgd5993dMhTotVfDDFdvMMEua6iNk6ol4GnpYfY69KC9iDTLGGqijNVAmwR"3600
TXT"v=spf1 ip4:46.29.240.45 ip4:46.29.240.89 ip4:46.29.240.92 ip4:93.94.228.132 ip6:2a01:518:1:42:8::132 ip4:93.94.228.133 ip6:2a01:518:1:42:8::133 ip4:93.94.228.142 ip6:2a01:518:1:42:8::142 include:spf.protection.outlook.com include:_spf.services.centric.eu" " include:spf.flowmailer.net -all"3600
TXT"_globalsign-domain-verification=rhqGIMd_HW1AzhkZT75h13gcEt-K0D6RworB1_gV4R"3600
TXT"nvun8xoGSy5Jq3JpOhHfE40ue5bqq2Dj9XtaPMDFAHGn37rlO7KBr0ABzGNxy2Y2"3600
TXT"V15hQwEv3V8cU2cH07medcDpGL2pmcvJ2A+/9Tpj3GBDfkLvQ8gjG/IwkPDqI/k9ZBD9CDE8nk5bC5VWDBA1dg=="3600
TXT"swHUhxy0zJ3iS6Yi53SwGdX3UjKa5OOblFVc1dfBHMJ5x79mIkagLvBnPs6lmnkU"3600
TXT"oAa5svqi9xKKcfxw66c7EG2LErznanxjFm69Nb5GtSstF2PzvwhGlDr43JsDSXBN"3600
TXT"65c7b33ff5b827ba534018df8a453db39c397f1153f0e01db10dea50f1b8f8a5"3600
CAA0 issuewild "certsign.ro"3600
CAA0 issuewild "letsencrypt.org"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "certsign.ro"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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: certsign.ro, letsencrypt.org.