brabant.nl

Checked 21 October 2026, 21:00 UTC · via 8.8.8.8
!Passed with warnings
25 passed 3 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/brabant.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/brabant.nl returned HTTP 429
    #3

Delegation

info

ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info
NS in the zone
ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info
NameserverAddressesNetwork (AS)Glue
ns1-04.azure-dns.com13.107.236.4 2603:1061:0:700::4AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns2-04.azure-dns.net150.171.21.4 2620:1ec:8ec:700::4AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns3-04.azure-dns.org204.14.183.4 2a01:111:4000:700::4AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4-04.azure-dns.info208.84.5.4 2620:1ec:bda:700::4AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.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
ns1-04.azure-dns.com 13.107.236.4NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1-04.azure-dns.com 2603:1061:0:700::4NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-04.azure-dns.net 150.171.21.4NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-04.azure-dns.net 2620:1ec:8ec:700::4NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns3-04.azure-dns.org 204.14.183.4NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns3-04.azure-dns.org 2a01:111:4000:700::4NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns4-04.azure-dns.info 208.84.5.4NOERROR, 8 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns4-04.azure-dns.info 2620:1ec:bda:700::4NOERROR, 8 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: ns4-04.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 1 · primary ns1-04.azure-dns.com

Found

Primary (MNAME)
ns1-04.azure-dns.com
Contact (RNAME)
postmaster.brabant.nl
Serial
1
Refresh / retry
900 s / 600 s
Expire
2419200 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1-04.azure-dns.com (13.107.236.4)1
ns1-04.azure-dns.com (2603:1061:0:700::4)1
ns2-04.azure-dns.net (150.171.21.4)1
ns2-04.azure-dns.net (2620:1ec:8ec:700::4)1
ns3-04.azure-dns.org (204.14.183.4)1
ns3-04.azure-dns.org (2a01:111:4000:700::4)1
ns4-04.azure-dns.info (208.84.5.4)1
ns4-04.azure-dns.info (2620:1ec:bda:700::4)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d. Current values: refresh 15m, retry 10m, expire 28d, negative TTL 1h.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-04.azure-dns.com is one of the listed nameservers.
  • ✓ Contact postmaster@brabant.nl #25
    The SOA RNAME postmaster.brabant.nl means postmaster@brabant.nl.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

DNSSEC

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
64638ECDSAP256SHA256 (13)SHA256 3B385592CE859728…yes

DNSKEY in the zone

Key tagRoleAlgorithm
64638KSK (257)ECDSAP256SHA256 (13)
4214ZSK (256)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 64638 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-20 19:59 UTC and expires at 2026-10-22 21:59 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

30 records at the apex

Found

Read from
13.107.236.4:53
TypeValueTTL
SOAns1-04.azure-dns.com. postmaster.brabant.nl. 1 900 600 2419200 36003600
NSns1-04.azure-dns.com.172800
NSns2-04.azure-dns.net.172800
NSns3-04.azure-dns.org.172800
NSns4-04.azure-dns.info.172800
A172.66.0.13660
AAAA2a06:98c1:58::8860
MX0 brabant-nl.b-v1.mx.microsoft.60
TXT"28d36db9a7f26acfa9131ce6497ce8c9dd6b478f8289072bf82dff09e43c40ff"60
TXT"vDJDI0N8EQ5ci48DOb8q8VGWLJLtgQcBf2myBvbdb4fjGt7VXqGbyEDhov8YZ1IU"60
TXT"oJICATnB2kVXxJhqz0vIAHztYTaRGaDOBDA9OQDlahYaprimyTW67xwnCRuh42qC"60
TXT"asuid.open.brabant.nl"60
TXT"038872743b909732ced688197e21edd79e3dbbccce8028a6590522cc75d7b526"60
TXT"ZhAWBDpA6cIBobWigfhIzrxFUwz+7VlUXmYXmbbNwZGPEgnpZq0likR3M9i60EnRtUE9ggOt8HaiFhfXO+wc1w=="60
TXT"QCdPVJxrg3bNTIz0WAC4AZ5vcxJY99yzU0tBfjKikg4TF8zmucOA3ys3aWP5R73b"60
TXT"apple-domain-verification=ynarKiv71TVXEQfr"60
TXT"v=spf1 include:spf1._spf.brabant.nl include:spf2._spf.brabant.nl include:spf.protection.outlook.com include:_spf.facilitor.nl include:_spf.basenet.nl include:secumail.email include:_spf.iprox.nl -all"60
TXT"VgyW3UuqzwXytDV9OYhv+eB4XW6QG65/UnDSyxo2XVFGXZV/7SJF4mB7xvzrGbFDoEtP7sZJ9w5f09o5hjsapw=="60
TXT"ZqbfGa0Wfa8jP2vPrS9WHsiBqE8vQjsi4Ya3GGEpYVAgewR9cWyfqv4q6iKxtBfj"60
TXT"sdsiIo1vEssxyPvg9zC37hE4rapOS0Al9Sw3tJM2hE235sTYTZb4KXxTnR8BxAQM"60
TXT"MS=ms64693911"60
TXT"Id43arL12SLRulViSVYK43fhOUkICJ8k29b0VqI9xzXsfLsIzt8Dk6W4ZXiJSPY7pkUfBcmQ87HxBBNuqCr4fg=="60
TXT"a8AbiXHa68A9AcWrb88GbNJZQHMAwVWhLxEVzQFZ0LGmehXJzDe3NZt2OoLOTErQ"60
TXT"949c44888f8df827eef47f63ede8994434be274002d0cf5154cec07e366eb2e2"60
TXT"xoocCMjNBYVK6gnhN2HqVOCQsINctR1eyR0z4YmpSth8wfTib60lPKZZ8co7Ej4b"60
TXT"b0D4wX0GeUy4yFFB2x0C8BNYvnfJ3As6QFCpNlrRYi8WlGXkDMIFJtpGwSNyyBL5"60
TXT"TCzb829BFmCnmOFzveBCYRJUQtRYNbkBcYfjOrVDYSVBc39FEPc62B5K7raVcsdR"60
TXT"Yt3VNjHpy8ddi0SsTbGQRwTBPvMNVLISaTr7HapysD0U3Em9yPVfolgOYOJJ6riI"60
TXT"1535e332acb0ae20512d2d7524e263a1d9046338fb7a9bc161136bea480ceb60"60
TXT"_y6yndvq0tev18gj7v0gpgnqid0rg9g3"60

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), AAAA (1m), MX (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 2d; resolvers may use either.
    #32
  • ✓ 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