nn.be

Checked 22 October 2026, 06:52 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 5 info

Registration

info

.be country-code

Found

TLD
.be (country-code)
ICANN policies apply
no

Checks

  • i
    .be 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
    .be is delegated in the root zone and DNSSEC-signed.
  • i
    Registration data not available
    No registration data via RDAP: the registry of .be offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.
    #3

Delegation

info

a1-220.akam.net, a13-65.akam.net, a2-66.akam.net, a20-67.akam.net, a26-64.akam.net, a7-65.akam.net

Found

Parent zone
be
Delegation from
a.nsset.be (194.0.6.1)
NS at the parent
a1-220.akam.net, a13-65.akam.net, a2-66.akam.net, a20-67.akam.net, a26-64.akam.net, a7-65.akam.net
NS in the zone
a1-220.akam.net, a13-65.akam.net, a2-66.akam.net, a20-67.akam.net, a26-64.akam.net, a7-65.akam.net
NameserverAddressesNetwork (AS)Glue
a1-220.akam.net193.108.91.220 2600:1401:2::dcAS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a13-65.akam.net2.22.230.65 2600:1480:800::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a2-66.akam.net95.100.174.66 2600:1480:7000::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a20-67.akam.net95.100.175.67 2a02:26f0:67::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a26-64.akam.net23.74.25.64 2600:1480:b800::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-65.akam.net23.61.199.65 2600:1406:32::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-220.akam.net, a13-65.akam.net, a2-66.akam.net, a20-67.akam.net, a26-64.akam.net, a7-65.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
a1-220.akam.net 193.108.91.220NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
a1-220.akam.net 2600:1401:2::dcNOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a13-65.akam.net 2.22.230.65NOERROR, 5 ms, authoritativenoyes / yesrefused41824.10
a13-65.akam.net 2600:1480:800::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a2-66.akam.net 95.100.174.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a2-66.akam.net 2600:1480:7000::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.30
a20-67.akam.net 95.100.175.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.33
a20-67.akam.net 2a02:26f0:67::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a26-64.akam.net 23.74.25.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a26-64.akam.net 2600:1480:b800::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a7-65.akam.net 23.61.199.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.4
a7-65.akam.net 2600:1406:32::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.4

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: a1-220.akam.net: "41824.5"; a1-220.akam.net: "41824.9"; a13-65.akam.net: "41824.10"; a13-65.akam.net: "41824.9"; a2-66.akam.net: "48878.29"; a2-66.akam.net: "48878.30"; a20-67.akam.net: "48878.33"; a20-67.akam.net: "48878.26"; a26-64.akam.net: "48878.32"; a26-64.akam.net: "48878.26"; a7-65.akam.net: "41824.4". 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 2023044210 · primary a1-220.akam.net

Found

Primary (MNAME)
a1-220.akam.net
Contact (RNAME)
hostmaster.nn.be
Serial
2023044210
Refresh / retry
3600 s / 600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
a1-220.akam.net (193.108.91.220)2023044210
a1-220.akam.net (2600:1401:2::dc)2023044210
a13-65.akam.net (2.22.230.65)2023044210
a13-65.akam.net (2600:1480:800::41)2023044210
a2-66.akam.net (95.100.174.66)2023044210
a2-66.akam.net (2600:1480:7000::42)2023044210
a20-67.akam.net (95.100.175.67)2023044210
a20-67.akam.net (2a02:26f0:67::43)2023044210
a26-64.akam.net (23.74.25.64)2023044210
a26-64.akam.net (2600:1480:b800::40)2023044210
a7-65.akam.net (23.61.199.65)2023044210
a7-65.akam.net (2600:1406:32::41)2023044210

Checks

  • ✓ Serial 2023044210 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 10m, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-220.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@nn.be #25
    The SOA RNAME hostmaster.nn.be means hostmaster@nn.be.
  • ✓ Timestamp serial #26
    The serial 2023044210 is a Unix timestamp (2034-02-08 20:43 UTC).

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
37854ECDSAP256SHA256 (13)SHA256 11F0ABEA49C222D2…yes

DNSKEY in the zone

Key tagRoleAlgorithm
61013ZSK (256)ECDSAP256SHA256 (13)
37854KSK (257)ECDSAP256SHA256 (13)
52961ZSK (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 37854 (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 11:04 UTC and expires at 2026-10-24 12:04 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

warn

28 records at the apex

Found

Read from
193.108.91.220:53
TypeValueTTL
SOAa1-220.akam.net. hostmaster.nn.be. 2023044210 3600 600 604800 30086400
NSa1-220.akam.net.300
NSa7-65.akam.net.300
NSa13-65.akam.net.300
NSa2-66.akam.net.300
NSa20-67.akam.net.300
NSa26-64.akam.net.300
A2.16.204.7320
A2.16.204.9320
AAAA2a02:26f0:b700:5::210:cc1e20
AAAA2a02:26f0:b700:5::210:cc0f20
MX10 nn-be.e-v1.mx.microsoft.300
TXT"_4rhlh2xw3bvyo6s8pavmqo34zg6x7x9"60
TXT"bua1LjhDfqOt1/j0K8HRh98/2vvAxz7UsVCNuVnRRWw="60
TXT"8af21a7b-e802-49f2-9a96-5546241b6239"60
TXT"_globalsign-domain-verification=qhd7XoeWYRfNp3o2BbxgMGK1uvhbSEY8zCNfUCHMYn"60
TXT"spf2.0/pra include:spf.flexmail.eu ?all"60
TXT"spycloud-domain-verification=ba29222a-29a2-4ead-9d2e-e8042d5bac6c"60
TXT"v=spf1 include:spf.flexmail.eu ip4:212.159.192.139 ip4:212.159.221.32/27 ip4:156.114.2.47 ip4:156.114.2.48 include:spf.protection.outlook.com include:spf.topdesk.net" " include:_spf.cegeka.be ip4:188.93.100.36 ip4:37.72.160.4 ip4:37.72.162.158 ip4:185.111.196.218 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 include:spf.mandrillapp.com include:sendgrid.net include:_spf.inb.keylanehosting.com -all"60
TXT"oueCxCruqV2UNxaHjZbToBE5FDoGhINSvk2yatEtTlI="60
TXT"atlassian-domain-verification=NpPO1VuaBgf1I4ZMI4h+rNy9wprpyBvH5CDJULtQ1LRkFVQkEchhN3rt9kaSIiJO"60
TXT"25bf6b4afa1849b1886c14d82b06efd5"60
TXT"sz1wgwpgtfkjnff95qwx7nm15jwxnbcb"60
CAA0 issue "digicert.com"1800
CAA0 issue "globalsign.com"1800
CAA0 iodef "mailto:it.security.pki@nn-group.com"1800
CAA0 issue "sectigo.com"1800
CAA0 issue "letsencrypt.org"1800

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 1d and in the zone 5m; resolvers may use either.
    #32
  • ✓ 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
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: digicert.com, globalsign.com, sectigo.com, letsencrypt.org.