klm.nl

Checked 21 October 2026, 21:22 UTC · via 8.8.8.8
!Passed with warnings
27 passed 2 warnings 0 failed 6 info

Registration

info

.nl country-code · EuroDNS S.A.

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
EuroDNS S.A.
Registered
29 August 1993
Last changed
15 July 2026
Status
active
Registry nameservers
a1-101.akam.net, a20-65.akam.net, a22-66.akam.net, a3-64.akam.net, a4-65.akam.net, a9-67.akam.net
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

a1-101.akam.net, a20-65.akam.net, a22-66.akam.net, a3-64.akam.net, a4-65.akam.net, a9-67.akam.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
a1-101.akam.net, a20-65.akam.net, a22-66.akam.net, a3-64.akam.net, a4-65.akam.net, a9-67.akam.net
NS in the zone
a1-101.akam.net, a20-65.akam.net, a22-66.akam.net, a3-64.akam.net, a4-65.akam.net, a9-67.akam.net
NameserverAddressesNetwork (AS)Glue
a1-101.akam.net193.108.91.101 2600:1401:2::65AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a20-65.akam.net95.100.175.65 2a02:26f0:67::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a22-66.akam.net23.211.61.66 2600:1480:7800::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a3-64.akam.net96.7.49.64 2600:1408:1c::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a4-65.akam.net72.246.46.65 2600:1480:9000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-67.akam.net184.85.248.67 2a02:26f0:117::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-101.akam.net, a20-65.akam.net, a22-66.akam.net, a3-64.akam.net, a4-65.akam.net, a9-67.akam.net.
  • ✓ 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 6 IPv4 /24s and 6 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 12 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .net
    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

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-101.akam.net 193.108.91.101NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
a1-101.akam.net 2600:1401:2::65NOERROR, 3 ms, authoritativenoyes / yesrefused41824.6
a20-65.akam.net 95.100.175.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.33
a20-65.akam.net 2a02:26f0:67::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a22-66.akam.net 23.211.61.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
a22-66.akam.net 2600:1480:7800::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a3-64.akam.net 96.7.49.64NOERROR, 4 ms, authoritativenoyes / yesrefused41824.4
a3-64.akam.net 2600:1408:1c::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a4-65.akam.net 72.246.46.65NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a4-65.akam.net 2600:1480:9000::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a9-67.akam.net 184.85.248.67NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
a9-67.akam.net 2a02:26f0:117::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-101.akam.net: "41824.9"; a1-101.akam.net: "41824.6"; a20-65.akam.net: "48878.33"; a20-65.akam.net: "48878.26"; a22-66.akam.net: "48878.27"; a22-66.akam.net: "48878.31"; a3-64.akam.net: "41824.4"; a3-64.akam.net: "41824.8"; a4-65.akam.net: "48878.31"; a9-67.akam.net: "41824.11"; a9-67.akam.net: "41824.8". 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 2021010858 · primary a4-65.akam.net

Found

Primary (MNAME)
a4-65.akam.net
Contact (RNAME)
please_set_email.absolutely.nowhere
Serial
2021010858
Refresh / retry
10800 s / 3600 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
a1-101.akam.net (193.108.91.101)2021010858
a1-101.akam.net (2600:1401:2::65)2021010858
a20-65.akam.net (95.100.175.65)2021010858
a20-65.akam.net (2a02:26f0:67::41)2021010858
a22-66.akam.net (23.211.61.66)2021010858
a22-66.akam.net (2600:1480:7800::42)2021010858
a3-64.akam.net (96.7.49.64)2021010858
a3-64.akam.net (2600:1408:1c::40)2021010858
a4-65.akam.net (72.246.46.65)2021010858
a4-65.akam.net (2600:1480:9000::41)2021010858
a9-67.akam.net (184.85.248.67)2021010858
a9-67.akam.net (2a02:26f0:117::43)2021010858

Checks

  • ✓ Serial 2021010858 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 28d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a4-65.akam.net is one of the listed nameservers.
  • ✓ Contact please_set_email@absolutely.nowhere #25
    The SOA RNAME please_set_email.absolutely.nowhere means please_set_email@absolutely.nowhere.
  • ✓ Date-based serial #26
    The serial 2021010858 follows the YYYYMMDDnn convention (2021-01-08).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
0 iterations, 0-byte salt
Signatures valid until
24 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
59018ECDSAP256SHA256 (13)SHA256 910BAEFBEC42273D…yes

DNSKEY in the zone

Key tagRoleAlgorithm
59018KSK (257)ECDSAP256SHA256 (13)
26129ZSK (256)ECDSAP256SHA256 (13)
14015ZSK (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 59018 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 73h0m0s and created on demand; the current one was made at 2026-10-21 18:44 UTC and expires at 2026-10-24 19:44 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

warn

16 records at the apex

Found

Read from
193.108.91.101:53
TypeValueTTL
SOAa4-65.akam.net. please_set_email.absolutely.nowhere. 2021010858 10800 3600 2419200 90086400
NSa9-67.akam.net.86400
NSa22-66.akam.net.86400
NSa1-101.akam.net.86400
NSa4-65.akam.net.86400
NSa20-65.akam.net.86400
NSa3-64.akam.net.86400
A2.16.204.1720
A2.16.204.2020
AAAA2a02:26f0:b700:4::210:cc5120
AAAA2a02:26f0:b700:4::210:cc5720
MX10 mx1.afkl.c3s2.iphmx.com.86400
MX20 mx2.afkl.c3s2.iphmx.com.86400
TXT"google-site-verification=e_gq9_ojepxvawekoq-uf-kdf3-4kesaupwi1x2_bto"86400
TXT"facebook-domain-verification=dc4eeknru15lkvcxc4fk1blxt46vzj"86400
TXT"v=spf1 -all"86400

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), AAAA (20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 1d; 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