nmbrs.nl

Checked 22 October 2026, 14:50 UTC · via 8.8.8.8
!Passed with warnings
20 passed 4 warnings 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/nmbrs.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/nmbrs.nl returned HTTP 429
    #3

Delegation

info

ns1-05.azure-dns.com, ns2-05.azure-dns.net, ns3-05.azure-dns.org, ns4-05.azure-dns.info

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1-05.azure-dns.com, ns2-05.azure-dns.net, ns3-05.azure-dns.org, ns4-05.azure-dns.info
NS in the zone
ns1-05.azure-dns.com, ns2-05.azure-dns.net, ns3-05.azure-dns.org, ns4-05.azure-dns.info
NameserverAddressesNetwork (AS)Glue
ns1-05.azure-dns.com13.107.236.5 2603:1061:0:700::5AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns2-05.azure-dns.net150.171.21.5 2620:1ec:8ec:700::5AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns3-05.azure-dns.org204.14.183.5 2a01:111:4000:700::5AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4-05.azure-dns.info208.84.5.5 2620:1ec:bda:700::5AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-05.azure-dns.com, ns2-05.azure-dns.net, ns3-05.azure-dns.org, ns4-05.azure-dns.info.
  • ✓ 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 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .info, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1-05.azure-dns.com 13.107.236.5NOERROR, 7 ms, authoritativenoyes / yesrefused-
ns1-05.azure-dns.com 2603:1061:0:700::5NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-05.azure-dns.net 150.171.21.5NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-05.azure-dns.net 2620:1ec:8ec:700::5NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3-05.azure-dns.org 204.14.183.5NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3-05.azure-dns.org 2a01:111:4000:700::5NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns4-05.azure-dns.info 208.84.5.5NOERROR, 5 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns4-05.azure-dns.info 2620:1ec:bda:700::5NOERROR, 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns4-05.azure-dns.info: "Knot DNS 3.1.2.1770717641.d6b376aff". 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

warn

serial 1216049200 · primary ns1-05.azure-dns.com

Found

Primary (MNAME)
ns1-05.azure-dns.com
Contact (RNAME)
postmaster.uniserver.nl
Serial
1216049200
Refresh / retry
14400 s / 1800 s
Expire
604800 s
Negative TTL
60 s

Serial per nameserver

NameserverSerial
ns1-05.azure-dns.com (13.107.236.5)1216049200
ns1-05.azure-dns.com (2603:1061:0:700::5)1216049200
ns2-05.azure-dns.net (150.171.21.5)1216049200
ns2-05.azure-dns.net (2620:1ec:8ec:700::5)1216049200
ns3-05.azure-dns.org (204.14.183.5)1216049200
ns3-05.azure-dns.org (2a01:111:4000:700::5)1216049200
ns4-05.azure-dns.info (208.84.5.5)1216049200
ns4-05.azure-dns.info (2620:1ec:bda:700::5)1216049200

Checks

  • ✓ Serial 1216049200 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 1m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 4h, retry 30m, expire 7d, negative TTL 1m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-05.azure-dns.com is one of the listed nameservers.
  • ✓ Contact postmaster@uniserver.nl #25
    The SOA RNAME postmaster.uniserver.nl means postmaster@uniserver.nl.
  • ✓ Timestamp serial #26
    The serial 1216049200 is a Unix timestamp (2008-07-14 15:26 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

warn

25 records at the apex

Found

Read from
13.107.236.5:53
TypeValueTTL
SOAns1-05.azure-dns.com. postmaster.uniserver.nl. 1216049200 14400 1800 604800 6060
NSns1-05.azure-dns.com.60
NSns2-05.azure-dns.net.60
NSns3-05.azure-dns.org.60
NSns4-05.azure-dns.info.60
A150.171.109.1003600
MX5 alt1.aspmx.l.google.com.60
MX5 alt2.aspmx.l.google.com.60
MX1 aspmx.l.google.com.60
MX10 aspmx2.googlemail.com.60
MX10 aspmx3.googlemail.com.60
TXT"fa-urlredirectionnmbrs.azurewebsites.net"60
TXT"MS=ms35807345"60
TXT"v=spf1 include:_spf.google.com include:sendgrid.net include:mail.zendesk.com include:_spf.payt.nl include:463621.spf05.hubspotemail.net ip4:192.254.119.131 include:_spf.paytsoftware.com -all"60
TXT"2t266j077upkevfkk5k6sgka0"60
TXT"google-site-verification=IYSUczwBWOeMjprBgYf-SNumG8m_wTf0ZXdkERGKGPI"60
TXT"137r1df65726f6pgjcgcjmlofg"60
TXT"DomainVerification=4XZU08WHGK5UGIYWCRIZ5K037GD6L2C9ZW99BH661DH2J9G8HIR0H62MKOGY6R0H"60
TXT"DomainVerification=8GBWBNZPA3AU3PYETOMV5VOH1KF3Y818SX28QMOA4EEKAJJQUPP6GFLDUR3TMBG1"60
TXT"QuoVadis=d07f63b7-c7ef-47b1-8908-b490bc87b6d1"60
TXT"97p8quepb4ivug9mbifn963m6m"60
TXT"4rjqh52u44e6c3pne7afjggli3"60
TXT"google-site-verification=JKmhGVr_J8bnt0BnW0yRUwj6dlE9INVmpzSXlb1HA6I"60
TXT"hpa7p2g0kt237lvbelbeeaim1o"60
TXT"DomainVerification=FQ42OZJIOICUZ1YDSK5TBXDUUCYH9LWE2VUBTVL4K4OQFLG6AN244X27L16IOMU1"60

Checks

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