olympischstadion.nl

Checked 22 October 2026, 15:01 UTC · via 8.8.8.8
!Passed with warnings
24 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/olympischstadion.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/olympischstadion.nl returned HTTP 429
    #3

Delegation

warn

ns1.myfasthosting.com, ns2.myfasthosting.com, ns3.myfasthosting.com

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.myfasthosting.com, ns2.myfasthosting.com, ns3.myfasthosting.com
NS in the zone
ns1.flerquehosting.nl, ns2.flerquehosting.nl, ns3.flerquehosting.nl
NameserverAddressesNetwork (AS)Glue
ns1.flerquehosting.nl (zone only)164.92.214.194 2a03:b0c0:2:d0::14d9:d001AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US-
ns1.myfasthosting.com (parent only)164.92.214.194 2a03:b0c0:2:d0::14d9:d001AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US-
ns2.flerquehosting.nl (zone only)172.233.48.234 2600:3c0e::f03c:93ff:fe55:40b0AS63949 AKAMAI-LINODE-AP - Akamai Connected Cloud, SG AS63949 AKAMAI-LINODE-AP - Akamai Connected Cloud, SG-
ns2.myfasthosting.com (parent only)172.233.48.234 2600:3c0e::f03c:93ff:fe55:40b0AS63949 AKAMAI-LINODE-AP - Akamai Connected Cloud, SG AS63949 AKAMAI-LINODE-AP - Akamai Connected Cloud, SG-
ns3.flerquehosting.nl (zone only)159.69.10.119 2a01:4f8:1c1c:dcf8::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
ns3.myfasthosting.com (parent only)159.69.10.119 2a01:4f8:1c1c:dcf8::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.myfasthosting.com, ns2.myfasthosting.com, ns3.myfasthosting.com.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns1.myfasthosting.com, ns2.myfasthosting.com, ns3.myfasthosting.com; only in the zone: ns1.flerquehosting.nl, ns2.flerquehosting.nl, ns3.flerquehosting.nl. ns1.flerquehosting.nl, ns1.myfasthosting.com, ns2.flerquehosting.nl, ns2.myfasthosting.com, ns3.flerquehosting.nl, ns3.myfasthosting.com report NS ns1.flerquehosting.nl ns2.flerquehosting.nl ns3.flerquehosting.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 3 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS14061 (DIGITALOCEAN-ASN - DigitalOcean, LLC, US): 4 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 4 addresses; AS63949 (AKAMAI-LINODE-AP - Akamai Connected Cloud, SG): 4 addresses.
  • i
    All nameserver names under .com
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.flerquehosting.nl 164.92.214.194NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns1.flerquehosting.nl 2a03:b0c0:2:d0::14d9:d001NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns1.myfasthosting.com 164.92.214.194NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns1.myfasthosting.com 2a03:b0c0:2:d0::14d9:d001NOERROR, 16 ms, authoritativenoyes / yesrefused-
ns2.flerquehosting.nl 172.233.48.234NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns2.flerquehosting.nl 2600:3c0e::f03c:93ff:fe55:40b0NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns2.myfasthosting.com 172.233.48.234NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns2.myfasthosting.com 2600:3c0e::f03c:93ff:fe55:40b0NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns3.flerquehosting.nl 159.69.10.119NOERROR, 2 ms, authoritativenoyes / yesrefused-
ns3.flerquehosting.nl 2a01:4f8:1c1c:dcf8::1NOERROR, 2 ms, authoritativenoyes / yesrefused-
ns3.myfasthosting.com 159.69.10.119NOERROR, 0 ms, authoritativenoyes / yesrefused-
ns3.myfasthosting.com 2a01:4f8:1c1c:dcf8::1NOERROR, 0 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 12 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 2026042900 · primary ns1.flerquehosting.nl

Found

Primary (MNAME)
ns1.flerquehosting.nl
Contact (RNAME)
monitor.hoasted.com
Serial
2026042900
Refresh / retry
3600 s / 1800 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.flerquehosting.nl (164.92.214.194)2026042900
ns1.flerquehosting.nl (2a03:b0c0:2:d0::14d9:d001)2026042900
ns1.myfasthosting.com (164.92.214.194)2026042900
ns1.myfasthosting.com (2a03:b0c0:2:d0::14d9:d001)2026042900
ns2.flerquehosting.nl (172.233.48.234)2026042900
ns2.flerquehosting.nl (2600:3c0e::f03c:93ff:fe55:40b0)2026042900
ns2.myfasthosting.com (172.233.48.234)2026042900
ns2.myfasthosting.com (2600:3c0e::f03c:93ff:fe55:40b0)2026042900
ns3.flerquehosting.nl (159.69.10.119)2026042900
ns3.flerquehosting.nl (2a01:4f8:1c1c:dcf8::1)2026042900
ns3.myfasthosting.com (159.69.10.119)2026042900
ns3.myfasthosting.com (2a01:4f8:1c1c:dcf8::1)2026042900

Checks

  • ✓ Serial 2026042900 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 30m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.flerquehosting.nl is one of the listed nameservers.
  • ✓ Contact monitor@hoasted.com #25
    The SOA RNAME monitor.hoasted.com means monitor@hoasted.com.
  • ✓ Date-based serial #26
    The serial 2026042900 follows the YYYYMMDDnn convention (2026-04-29).

DNSSEC

warn

Signed, but no DS at parent

Found

Validated by resolver
no
Denial of existence
NSEC3
NSEC3
7 iterations, 8-byte salt
Signatures valid until
5 November 2026

DNSKEY in the zone

Key tagRoleAlgorithm
48309KSK (257)ECDSAP256SHA256 (13)
55838ZSK (256)ECDSAP256SHA256 (13)

Checks

  • !
    Signed but not delegated securely
    The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.
    #27
  • ✓ 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.
  • !
    NSEC3 with extra iterations or salt
    NSEC3 uses 7 iterations and a 8-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.
    #31

Records

info

13 records at the apex

Found

Read from
164.92.214.194:53
TypeValueTTL
SOAns1.flerquehosting.nl. monitor.hoasted.com. 2026042900 3600 1800 1209600 8640086400
NSns2.flerquehosting.nl.86400
NSns1.flerquehosting.nl.86400
NSns3.flerquehosting.nl.86400
A45.152.249.9300
MX1 olympischstadion-nl.mail.protection.outlook.com.300
MX30 mailbackup.olympischstadion.nl.300
MX20 mail.olympischstadion.nl.300
TXT"google-site-verification=shMCzNKSkwDvMtxREQHXva_zwL1oLVOeANec5KY8pow"300
TXT"v=spf1 a mx include:spf.protection.outlook.com ip4:130.193.4.182 ~all"300
TXT"brevo-code:33b8a627201bcfeb32a2ec4240f81cf6"300
TXT"google-site-verification=1C_RdorV3ORUjdGcOYIh6AZD7iS4EHJ0qTe-x8v2D1s"300
TXT"MS=ms41389844"300

Checks

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