isolatiespecialist.nl

Checked 22 October 2026, 14:00 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 5 info

Registration

info

.nl country-code · Registrar.eu

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Registrar.eu
Registered
7 December 2004
Last changed
21 September 2026
Status
active
Registry nameservers
ns1-02.azure-dns.com, ns2-02.azure-dns.net, ns3-02.azure-dns.org, ns4-02.azure-dns.info
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

ns1-02.azure-dns.com, ns2-02.azure-dns.net, ns3-02.azure-dns.org, ns4-02.azure-dns.info

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1-02.azure-dns.com, ns2-02.azure-dns.net, ns3-02.azure-dns.org, ns4-02.azure-dns.info
NS in the zone
ns1-02.azure-dns.com, ns2-02.azure-dns.net, ns3-02.azure-dns.org, ns4-02.azure-dns.info
NameserverAddressesNetwork (AS)Glue
ns1-02.azure-dns.com13.107.236.2 2603:1061:0:700::2AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns2-02.azure-dns.net150.171.21.2 2620:1ec:8ec:700::2AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns3-02.azure-dns.org204.14.183.2 2a01:111:4000:700::2AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4-02.azure-dns.info208.84.5.2 2620:1ec:bda:700::2AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-02.azure-dns.com, ns2-02.azure-dns.net, ns3-02.azure-dns.org, ns4-02.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

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1-02.azure-dns.com 13.107.236.2NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns1-02.azure-dns.com 2603:1061:0:700::2NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns2-02.azure-dns.net 150.171.21.2NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns2-02.azure-dns.net 2620:1ec:8ec:700::2NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns3-02.azure-dns.org 204.14.183.2NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns3-02.azure-dns.org 2a01:111:4000:700::2NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns4-02.azure-dns.info 208.84.5.2NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns4-02.azure-dns.info 2620:1ec:bda:700::2NOERROR, 5 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

pass

serial 1 · primary ns1-02.azure-dns.com

Found

Primary (MNAME)
ns1-02.azure-dns.com
Contact (RNAME)
azuredns-hostmaster.microsoft.com
Serial
1
Refresh / retry
3600 s / 300 s
Expire
2419200 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1-02.azure-dns.com (13.107.236.2)1
ns1-02.azure-dns.com (2603:1061:0:700::2)1
ns2-02.azure-dns.net (150.171.21.2)1
ns2-02.azure-dns.net (2620:1ec:8ec:700::2)1
ns3-02.azure-dns.org (204.14.183.2)1
ns3-02.azure-dns.org (2a01:111:4000:700::2)1
ns4-02.azure-dns.info (208.84.5.2)1
ns4-02.azure-dns.info (2620:1ec:bda:700::2)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 5m, expire 28d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-02.azure-dns.com is one of the listed nameservers.
  • ✓ Contact azuredns-hostmaster@microsoft.com #25
    The SOA RNAME azuredns-hostmaster.microsoft.com means azuredns-hostmaster@microsoft.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

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

info

19 records at the apex

Found

Read from
13.107.236.2:53
TypeValueTTL
SOAns1-02.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 2419200 3003600
NSns1-02.azure-dns.com.172800
NSns2-02.azure-dns.net.172800
NSns3-02.azure-dns.org.172800
NSns4-02.azure-dns.info.172800
A162.159.135.423600
AAAA2606:4700:7::a29f:872a3600
MX0 isolatiespecialist-nl.mail.protection.outlook.com.300
TXT"facebook-domain-verification=sup743b3jq299651mlurk7emgkumyj"300
TXT"google-site-verification=GZkjZ1L7BBxtvP7buwHQz5WDIC_aSp4wvD-NJHWWzv8"300
TXT"ca3-f2fcb6c4814142e29f769bbfa9d85c81"300
TXT"ca3-6834612e569e4a6585a0b2aacc1f656e"300
TXT"google-site-verification=zLtAH55Ln9qnYrlWTPljCg_P2HAArhdNuVJI9Zh3TjQ"300
TXT"MS=ms43430321"300
TXT"MS=ms82475738"300
TXT"ms-domain-verification=e9505079-b601-4b10-b065-ba7871c7f9eb"300
TXT"v=spf1 a mx include:spf.smtp2go.com include:_spf.exactonline.nl include:spf.protection.outlook.com -all"300
TXT"google-site-verification=bjH0E5xIEEpj0rE3DdJq7nW6XCDSnyI_h2K6E61_Yrk"300
TXT"google-site-verification=tur7sfsipkx7_lSjoHeP3i6cNE3HWt8uA4slBSIv16Q"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 5m, NS 2d. The NS TTL at the parent is 1h and in the zone 2d; resolvers may use either.
  • ✓ 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