unie.nl

Checked 22 October 2026, 16:50 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 6 info

Registration

info

.nl country-code

Found

TLD
.nl (country-code)
ICANN policies apply
no
Lookup error: https://rdap.sidn.nl/domain/unie.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/unie.nl returned HTTP 429
    #3

Delegation

warn

ns1.leaseweb.nl, ns4.leaseweb.net, ns5.leaseweb.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.leaseweb.nl, ns4.leaseweb.net, ns5.leaseweb.nl
NS in the zone
ns0.leaseweb.nl, ns1.leaseweb.nl, ns4.leaseweb.net, ns5.leaseweb.nl
NameserverAddressesNetwork (AS)Glue
ns0.leaseweb.nl (zone only)23.19.196.53 2607:f5b5::53AS7203 LEASEWEB-USA-SFO - Leaseweb USA, Inc., US AS28753 LEASEWEB-DE-FRA-10 - Leaseweb Deutschland GmbH, DE-
ns1.leaseweb.nl23.19.196.53 2607:f5b5::53AS7203 LEASEWEB-USA-SFO - Leaseweb USA, Inc., US AS28753 LEASEWEB-DE-FRA-10 - Leaseweb Deutschland GmbH, DE23.19.196.53 2607:f5b5::53
ns4.leaseweb.net23.19.196.53 2607:f5b5::53AS7203 LEASEWEB-USA-SFO - Leaseweb USA, Inc., US AS28753 LEASEWEB-DE-FRA-10 - Leaseweb Deutschland GmbH, DE-
ns5.leaseweb.nl23.19.197.53 2607:f5b5:1::53AS7203 LEASEWEB-USA-SFO - Leaseweb USA, Inc., US AS28753 LEASEWEB-DE-FRA-10 - Leaseweb Deutschland GmbH, DE23.19.197.53 2607:f5b5:1::53

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.leaseweb.nl, ns4.leaseweb.net, ns5.leaseweb.nl.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: ns0.leaseweb.nl. ns0.leaseweb.nl, ns1.leaseweb.nl, ns4.leaseweb.net, ns5.leaseweb.nl report NS ns0.leaseweb.nl ns1.leaseweb.nl ns4.leaseweb.net ns5.leaseweb.nl.
    #7
  • ✓ 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: AS28753 (LEASEWEB-DE-FRA-10 - Leaseweb Deutschland GmbH, DE): 4 addresses; AS7203 (LEASEWEB-USA-SFO - Leaseweb USA, Inc., US): 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

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns0.leaseweb.nl 23.19.196.53NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns0.leaseweb.nl 2607:f5b5::53NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1.leaseweb.nl 23.19.196.53NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1.leaseweb.nl 2607:f5b5::53NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns4.leaseweb.net 23.19.196.53NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns4.leaseweb.net 2607:f5b5::53NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns5.leaseweb.nl 23.19.197.53NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns5.leaseweb.nl 2607:f5b5:1::53NOERROR, 4 ms, authoritativenoyes / yesrefused-

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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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

info

serial 2021062900 · primary ns0.leaseweb.com

Found

Primary (MNAME)
ns0.leaseweb.com
Contact (RNAME)
postmaster.leaseweb.com
Serial
2021062900
Refresh / retry
10800 s / 3600 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns0.leaseweb.nl (23.19.196.53)2021062900
ns0.leaseweb.nl (2607:f5b5::53)2021062900
ns1.leaseweb.nl (23.19.196.53)2021062900
ns1.leaseweb.nl (2607:f5b5::53)2021062900
ns4.leaseweb.net (23.19.196.53)2021062900
ns4.leaseweb.net (2607:f5b5::53)2021062900
ns5.leaseweb.nl (23.19.197.53)2021062900
ns5.leaseweb.nl (2607:f5b5:1::53)2021062900

Checks

  • ✓ Serial 2021062900 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 14d, negative TTL 1h.
  • i
    Hidden master
    The primary nameserver ns0.leaseweb.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact postmaster@leaseweb.com #25
    The SOA RNAME postmaster.leaseweb.com means postmaster@leaseweb.com.
  • ✓ Date-based serial #26
    The serial 2021062900 follows the YYYYMMDDnn convention (2021-06-29).

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
60264ECDSAP256SHA256 (13)SHA256 3277B20FE594A1A9…yes

DNSKEY in the zone

Key tagRoleAlgorithm
60264KSK (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 60264 (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

warn

17 records at the apex

Found

Read from
23.19.196.53:53
TypeValueTTL
SOAns0.leaseweb.com. postmaster.leaseweb.com. 2021062900 10800 3600 1209600 360086400
NSns5.leaseweb.nl.86400
NSns1.leaseweb.nl.86400
NSns0.leaseweb.nl.86400
NSns4.leaseweb.net.86400
A62.221.211.7960
MX1 unie-nl.mail.protection.outlook.com.3600
TXT"MS=ms86715360"300
TXT"MS=ms31912429"300
TXT"google-site-verification=xbEfjAQ5USNKkNHaKp9VJCLQJQ2urDOamawVCc_Ru34"300
TXT"DomainVerification=706IS4X15E6GHQZDOYHARMLQP2Y82B4C36CV2FOTTBTXU65WSX0YG68F3WXPGUNG"300
TXT"d365mktkey=eMzu4820D74HBwZjwexSJLVJ9rlqL5U8bMTcNGxYWUgx"300
TXT"MS=ms44268514"300
TXT"facebook-domain-verification=s1let57ffkanffxzc5a8dtkp37vevh"300
TXT"v=spf1 ip4:62.221.211.79 ip4:62.221.212.25 mx include:spf.protection.outlook.com include:_spf.zivver.com include:eur.pb-dynmktge.com include:sendgrid.net -all"300
TXT"kIEhwPTFVEXoPZ4bj4ROm3kBbGmfznSWm065MH1/E9g84D7lmzL4f+Z54l9aBNq6RIEJhlk5nYNoKz/VJMbBtg=="300
TXT"d365mktkey=fDXWQ5XmxaOB3KYJxnb5ZeCNCk2Lgnw2xiHT4qrwZ7wx"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 1d; resolvers may use either.
    #32
  • ✓ 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