olympia.nl

Checked 22 October 2026, 15:01 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 4 info

Registration

info

.nl country-code

Found

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

Delegation

info

ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org, ns4-08.azure-dns.info

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org, ns4-08.azure-dns.info
NS in the zone
ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org, ns4-08.azure-dns.info
NameserverAddressesNetwork (AS)Glue
ns1-08.azure-dns.com13.107.236.8 2603:1061:0:700::8AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns2-08.azure-dns.net150.171.21.8 2620:1ec:8ec:700::8AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns3-08.azure-dns.org204.14.183.8 2a01:111:4000:700::8AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4-08.azure-dns.info208.84.5.8 2620:1ec:bda:700::8AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org, ns4-08.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
ns1-08.azure-dns.com 13.107.236.8NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1-08.azure-dns.com 2603:1061:0:700::8NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-08.azure-dns.net 150.171.21.8NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-08.azure-dns.net 2620:1ec:8ec:700::8NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3-08.azure-dns.org 204.14.183.8NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3-08.azure-dns.org 2a01:111:4000:700::8NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns4-08.azure-dns.info 208.84.5.8NOERROR, 5 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns4-08.azure-dns.info 2620:1ec:bda:700::8NOERROR, 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: ns4-08.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

pass

serial 2018083000 · primary ns1-08.azure-dns.com

Found

Primary (MNAME)
ns1-08.azure-dns.com
Contact (RNAME)
postmaster.olympia.nl
Serial
2018083000
Refresh / retry
14400 s / 3600 s
Expire
1814400 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1-08.azure-dns.com (13.107.236.8)2018083000
ns1-08.azure-dns.com (2603:1061:0:700::8)2018083000
ns2-08.azure-dns.net (150.171.21.8)2018083000
ns2-08.azure-dns.net (2620:1ec:8ec:700::8)2018083000
ns3-08.azure-dns.org (204.14.183.8)2018083000
ns3-08.azure-dns.org (2a01:111:4000:700::8)2018083000
ns4-08.azure-dns.info (208.84.5.8)2018083000
ns4-08.azure-dns.info (2620:1ec:bda:700::8)2018083000

Checks

  • ✓ Serial 2018083000 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 21d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-08.azure-dns.com is one of the listed nameservers.
  • ✓ Contact postmaster@olympia.nl #25
    The SOA RNAME postmaster.olympia.nl means postmaster@olympia.nl.
  • ✓ Date-based serial #26
    The serial 2018083000 follows the YYYYMMDDnn convention (2018-08-30).

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

15 records at the apex

Found

Read from
13.107.236.8:53
TypeValueTTL
SOAns1-08.azure-dns.com. postmaster.olympia.nl. 2018083000 14400 3600 1814400 864003600
NSns1-08.azure-dns.com.3600
NSns2-08.azure-dns.net.3600
NSns3-08.azure-dns.org.3600
NSns4-08.azure-dns.info.3600
A216.150.1.1600
MX10 olympia-nl.mail.protection.outlook.com.3600
TXT"v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:spf.sendinblue.com include:_spf.strato.com include:spf.felton.nl include:spf.afas.online include:spf.topdesk.net include:spf.cordeo.com -all"3600
TXT"Sendinblue-code:f6772262424801e5fd0f7dcd4d178314"3600
TXT"9169a986069ce253817b9a7d80ecf190"3600
TXT"google-site-verification=gnFeULKV8Sw1hz58dMlJWhj59AeQT_Wu1wnjaZmtqAE"3600
TXT"hibp-verify=dweb_gont6gse252qm86koo4vzcjm"3600
TXT"anthropic-domain-verification-8s0rbk=sQ2jB7Q3GG22rFxoqK1eQJghM"3600
TXT"google-site-verification=nH9Pia_MlSFAUOVTkcLX9G8y5w95VQqMLTuH9MdNw2w"3600
TXT"slack-domain-verification=VW6h8LjttiPopsl5rcfdCXQ7pScc4hyrBD4I4LqZ"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 1h, NS 1h.
  • ✓ 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