nn.nl

Checked 21 October 2026, 21:23 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 6 info

Registration

info

.nl country-code

Found

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

Delegation

info

eur5.akam.net, eur6.akam.net, ns1-2.akam.net, ns1-89.akam.net, usc3.akam.net, use3.akam.net, usw1.akam.net, usw2.akam.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
eur5.akam.net, eur6.akam.net, ns1-2.akam.net, ns1-89.akam.net, usc3.akam.net, use3.akam.net, usw1.akam.net, usw2.akam.net
NS in the zone
eur5.akam.net, eur6.akam.net, ns1-2.akam.net, ns1-89.akam.net, usc3.akam.net, use3.akam.net, usw1.akam.net, usw2.akam.net
NameserverAddressesNetwork (AS)Glue
eur5.akam.net23.74.25.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
eur6.akam.net2.22.230.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns1-2.akam.net193.108.91.2 2600:1401:2::2AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns1-89.akam.net193.108.91.89 2600:1401:2::59AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
usc3.akam.net96.7.50.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
use3.akam.net96.7.49.65AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
usw1.akam.net23.61.199.66AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
usw2.akam.net184.26.161.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 8 nameservers #6
    Delegated to eur5.akam.net, eur6.akam.net, ns1-2.akam.net, ns1-89.akam.net, usc3.akam.net, use3.akam.net, usw1.akam.net, usw2.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2600:1401:2::/48, while the other address family is spread over several networks.
    #10
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 2 addresses; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 8 addresses.
  • 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: eur5.akam.net, eur6.akam.net, usc3.akam.net, use3.akam.net, usw1.akam.net, usw2.akam.net.
    #13

Nameservers

warn

10 of 10 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
eur5.akam.net 23.74.25.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
eur6.akam.net 2.22.230.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
ns1-2.akam.net 193.108.91.2NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
ns1-2.akam.net 2600:1401:2::2NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
ns1-89.akam.net 193.108.91.89NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
ns1-89.akam.net 2600:1401:2::59NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
usc3.akam.net 96.7.50.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.26
use3.akam.net 96.7.49.65NOERROR, 3 ms, authoritativenoyes / yesrefused41824.8
usw1.akam.net 23.61.199.66NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
usw2.akam.net 184.26.161.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27

Checks

  • ✓ All respond #14
    All 10 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: eur5.akam.net: "48878.31"; eur6.akam.net: "41824.11"; ns1-2.akam.net: "41824.6"; ns1-2.akam.net: "41824.8"; ns1-89.akam.net: "41824.11"; ns1-89.akam.net: "41824.10"; usc3.akam.net: "48878.26"; use3.akam.net: "41824.8"; usw1.akam.net: "41824.9"; usw2.akam.net: "48878.27". 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 2015022424 · primary eur6.akam.net

Found

Primary (MNAME)
eur6.akam.net
Contact (RNAME)
postmaster.mail.ing.nl
Serial
2015022424
Refresh / retry
14400 s / 3600 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
eur5.akam.net (23.74.25.64)2015022424
eur6.akam.net (2.22.230.64)2015022424
ns1-2.akam.net (193.108.91.2)2015022424
ns1-2.akam.net (2600:1401:2::2)2015022424
ns1-89.akam.net (193.108.91.89)2015022424
ns1-89.akam.net (2600:1401:2::59)2015022424
usc3.akam.net (96.7.50.64)2015022424
use3.akam.net (96.7.49.65)2015022424
usw1.akam.net (23.61.199.66)2015022424
usw2.akam.net (184.26.161.64)2015022424

Checks

  • ✓ Serial 2015022424 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver eur6.akam.net is one of the listed nameservers.
  • ✓ Contact postmaster@mail.ing.nl #25
    The SOA RNAME postmaster.mail.ing.nl means postmaster@mail.ing.nl.
  • ✓ Date-based serial #26
    The serial 2015022424 follows the YYYYMMDDnn convention (2015-02-24).

DNSSEC

info

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
10279ECDSAP256SHA256 (13)SHA256 F6DA571749AABF2A…NO
13592ECDSAP256SHA256 (13)SHA256 C7B12FEDC159AA50…yes

DNSKEY in the zone

Key tagRoleAlgorithm
13592KSK (257)ECDSAP256SHA256 (13)
63634ZSK (256)ECDSAP256SHA256 (13)
4803ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • i
    Unused DS records
    These DS records match no key in the zone: key tag 10279 (SHA256). That is normal during a key rollover; otherwise remove them.
    #28
  • ✓ 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 06:00 UTC and expires at 2026-10-24 07:00 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

warn

52 records at the apex

Found

Read from
23.74.25.64:53
TypeValueTTL
SOAeur6.akam.net. postmaster.mail.ing.nl. 2015022424 14400 3600 604800 86400300
NSuse3.akam.net.300
NSns1-89.akam.net.300
NSeur5.akam.net.300
NSusc3.akam.net.300
NSusw1.akam.net.300
NSns1-2.akam.net.300
NSeur6.akam.net.300
NSusw2.akam.net.300
A2.16.204.1120
A2.16.204.2820
AAAA2a02:26f0:b700:5::210:cc1c20
AAAA2a02:26f0:b700:5::210:cc0b20
MX10 nn-nl.w-v1.mx.microsoft.300
TXT"bua1LjhDfqOt1/j0K8HRh98/2vvAxz7UsVCNuVnRRWw="300
TXT"_9234bdup9nokclqzj9eqlu7ujruyqcq"300
TXT"g067slgsmwp1dsqq6swtq9ld8hz1p4k6"300
TXT"_q0kzf7rolblb3bbxl351j5s8v0x2q0m"300
TXT"C9IYTVU6PeKJeHW0F7lqtkEN4Wo9P1BRsW5JSz/xpUU="300
TXT"90m8cyr51ngxm795kxjnpnfd5wn8b70j"300
TXT"aanmelder.nl-user=70061"300
TXT"mandrill_verify.gvLEi-VqNOBJyocarFFDoA"300
TXT"_omklco3fsxo0y7gea30uj5u35jjpavm"300
TXT"zQ4Xe+/gU2gXN3cdScSfKc2+z3YJdEnk8+Z/tq35a1k="300
TXT"0dqhcxpxfh9ym3fdn1270h9wf4m4pbz7"300
TXT"6mAM8sn0fJNIG/hV2+1JAagQFtjxAtL9qm9GbEjT2sk="300
TXT"oueCxCruqV2UNxaHjZbToBE5FDoGhINSvk2yatEtTlI="300
TXT"Z7cDl8rLukyQAj11C1zpyQqfxEM7Qqqa76ZmR1Vtr/Y="300
TXT"wynNOpS4Eu4nCt/W595Zkd3wQ5L/QkHMNdhTlL/ot8M="300
TXT"nzxrxx50q0sh7v0xvqz7fnlbf9ydly60"300
TXT"g3mGP4BK87iibWv/PpM9CbqnmxKivldu4+vxCOdN7+c="300
TXT"v=spf1 include:spf.insim.biz include:spf.mailtopay.nl include:_spf.salesforce.com include:spf.mandrillapp.com ip4:46.31.48.0/21 ip4:62.50.78.150 ip4:18.196.215.67 ip4:84.53.65.32 ip4:84.53.65.25 ip4:77.73.231.209 ip4:78.31.119.34 ip4:212.114.113.4 ip4:212" ".114.113.223 ip4:212.114.113.224 ip4:212.114.113.225 ip4:212.114.113.218 ip4:78.31.119.16 ip4:82.199.69.32/27 ip4:82.199.70.59 ip4:82.199.69.59 -all"300
TXT"_tmtyzlagmzbllg2e3bp3n2s28fyewh5"300
TXT"pardot667373=81511cf48570e180a6ac20354b3cd5c2109897b5b6624a06e98f53c311aff8f7"300
TXT"d4KnjwsKyechChVuEEoV+83pYz8Igz/VncnyNVoVQ1g="300
TXT"_4ci95k9xkc32vdfzt7q7845xlilep31"300
TXT"448c61edf37040ff88a5c98281fa7192"300
TXT"google-site-verification=wi70O2K8CpWFBeCF70168XVgOyccTRZ2t8DIIQ6htM0"300
TXT"z/bI60fHw+NUQlqszaYN+PlbvDScwO1MVcoboROisLw="300
TXT"_07q93s6d0lhze592q499uyg1a9n6qt4"300
TXT"miro-verification=220c07096b99fc6f472eca4c37a2407f26b7aa34"300
TXT"_gyw7mf9k89m7c25yu4lux9jlra4dqb8"300
CAA0 issue "www.pkioverheid.nl"300
CAA0 iodef "mailto:it.security.pki@nn-group.com"300
CAA0 issue "globalsign.com"300
CAA0 issuewild "letsencrypt.org"300
CAA0 issue "amazon.com"300
CAA0 issue "digidentity.com"300
CAA0 issuewild "globalsign.com"300
CAA0 issue "letsencrypt.org"300
CAA0 issuewild "digicert.com"300
CAA0 issue "digicert.com"300

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 5m; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: www.pkioverheid.nl, globalsign.com, letsencrypt.org, amazon.com, digidentity.com, digicert.com.