technieknederland.nl

Checked 21 October 2026, 21:25 UTC · via 8.8.8.8
!Passed with warnings
26 passed 1 warning 0 failed 8 info

Registration

info

.nl country-code · team.blue nl B.V.

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
team.blue nl B.V.
Registered
30 November 2013
Last changed
29 December 2020
Status
active
Registry nameservers
ns1.dn-s.nl, ns2.dn-s.nl, ns3.dn-s.nl, ns4.dn-s.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.dn-s.nl, ns2.dn-s.nl, ns3.dn-s.nl, ns4.dn-s.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.dn-s.nl, ns2.dn-s.nl, ns3.dn-s.nl, ns4.dn-s.nl
NS in the zone
ns1.dn-s.nl, ns2.dn-s.nl, ns3.dn-s.nl, ns4.dn-s.nl
NameserverAddressesNetwork (AS)Glue
ns1.dn-s.nl185.104.28.19 2a06:2ec0:1::10AS206281 AS-ZXCS - Stichting DIGI NL, NL AS206281 AS-ZXCS - Stichting DIGI NL, NL-
ns2.dn-s.nl46.101.179.64 2a03:b0c0:3:d0::116:2001AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US-
ns3.dn-s.nl178.62.208.8 2a03:b0c0:2:d0::57:1001AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US-
ns4.dn-s.nl185.220.172.14 2a06:2ec0:1:a::d53AS206281 AS-ZXCS - Stichting DIGI NL, NL AS206281 AS-ZXCS - Stichting DIGI NL, NL-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.dn-s.nl, ns2.dn-s.nl, ns3.dn-s.nl, ns4.dn-s.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 4 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): 4 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

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.dn-s.nl 185.104.28.19NOERROR, 12 ms, authoritativenoyes / yesrefusedUnknown
ns1.dn-s.nl 2a06:2ec0:1::10NOERROR, 12 ms, authoritativenoyes / yesrefusedUnknown
ns2.dn-s.nl 46.101.179.64NOERROR, 18 ms, authoritativenoyes / yesrefusedUnknown
ns2.dn-s.nl 2a03:b0c0:3:d0::116:2001NOERROR, 19 ms, authoritativenoyes / yesrefusedUnknown
ns3.dn-s.nl 178.62.208.8NOERROR, 14 ms, authoritativenoyes / yesrefusedUnknown
ns3.dn-s.nl 2a03:b0c0:2:d0::57:1001NOERROR, 13 ms, authoritativenoyes / yesrefusedUnknown
ns4.dn-s.nl 185.220.172.14NOERROR, 10 ms, authoritativenoyes / yesrefusedUnknown
ns4.dn-s.nl 2a06:2ec0:1:a::d53NOERROR, 11 ms, authoritativenoyes / yesrefusedUnknown

Checks

  • ✓ All respond #14
    All 8 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: ns1.dn-s.nl: "Unknown"; ns2.dn-s.nl: "Unknown"; ns3.dn-s.nl: "Unknown"; ns4.dn-s.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

warn

serial 2026082503 · primary ns1.dn-s.nl

Found

Primary (MNAME)
ns1.dn-s.nl
Contact (RNAME)
hostmaster.technieknederland.nl
Serial
2026082503
Refresh / retry
600 s / 3600 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.dn-s.nl (185.104.28.19)2026082503
ns1.dn-s.nl (2a06:2ec0:1::10)2026082503
ns2.dn-s.nl (46.101.179.64)2026082503
ns2.dn-s.nl (2a03:b0c0:3:d0::116:2001)2026082503
ns3.dn-s.nl (178.62.208.8)2026082503
ns3.dn-s.nl (2a03:b0c0:2:d0::57:1001)2026082503
ns4.dn-s.nl (185.220.172.14)2026082503
ns4.dn-s.nl (2a06:2ec0:1:a::d53)2026082503

Checks

  • ✓ Serial 2026082503 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 10m is outside 20m–1d; retry 1h should be shorter than refresh 10m. Current values: refresh 10m, retry 1h, expire 14d, negative TTL 5m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.dn-s.nl is one of the listed nameservers.
  • ✓ Contact hostmaster@technieknederland.nl #25
    The SOA RNAME hostmaster.technieknederland.nl means hostmaster@technieknederland.nl.
  • ✓ Date-based serial #26
    The serial 2026082503 follows the YYYYMMDDnn convention (2026-08-25).

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
53311RSASHA256 (8)SHA256 8E0420B0F0552380…yes

DNSKEY in the zone

Key tagRoleAlgorithm
53311KSK (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 53311 (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.
  • 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
185.104.28.19:53
TypeValueTTL
SOAns1.dn-s.nl. hostmaster.technieknederland.nl. 2026082503 600 3600 1209600 300300
NSns1.dn-s.nl.300
NSns2.dn-s.nl.300
NSns4.dn-s.nl.300
NSns3.dn-s.nl.300
A20.50.2.61300
MX0 TechniekNederland-nl.mail.protection.outlook.com.300
TXT"v=spf1 include:spf.technieknederland.nl -all"300
TXT"mandrill_verify.V9CtiRSzdCgoPnM7VDjevg"300
TXT"DagVUtKxyhOFTT5TFV5l7id0u/DBCsMU9fhVnRzn+zHE8U43hkwqr7foqBHatFmzizbaQKN2nDMYZOz6JhtXkg=="300
TXT"hibp-verify=dweb_x8lo51hfjvzzachqtdmgz12f"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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