smartschool.be

Checked 22 October 2026, 07:11 UTC · via 8.8.8.8
!Passed with warnings
22 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

warn

ns-ext01-aws-eu-central-1.smartbit.org, ns-ext01-aws-eu-west-3a.smartbit.org, ns-ext01-dcg.smartbit.be, ns-ext01-gs.smartbit.be

Found

Parent zone
be
Delegation from
a.nsset.be (194.0.6.1)
NS at the parent
ns-ext01-aws-eu-central-1.smartbit.org, ns-ext01-aws-eu-west-3a.smartbit.org, ns-ext01-dcg.smartbit.be, ns-ext01-gs.smartbit.be
NS in the zone
ns-ext01-aws-eu-central-1.smartbit.org, ns-ext01-aws-eu-west-3a.smartbit.org, ns-ext01-dcg.smartbit.be, ns-ext01-gs.smartbit.be
NameserverAddressesNetwork (AS)Glue
ns-ext01-aws-eu-central-1.smartbit.org3.123.210.115AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-ext01-aws-eu-west-3a.smartbit.org15.236.229.190AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-ext01-dcg.smartbit.be193.32.59.91AS211268 Smartbit - Smartbit CommV, BE193.32.59.91
ns-ext01-gs.smartbit.be193.56.132.91AS211268 Smartbit - Smartbit CommV, BE193.56.132.91

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-ext01-aws-eu-central-1.smartbit.org, ns-ext01-aws-eu-west-3a.smartbit.org, ns-ext01-dcg.smartbit.be, ns-ext01-gs.smartbit.be.
  • ✓ 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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS16509 (AMAZON-02 - Amazon.com, Inc., US): 2 addresses; AS211268 (Smartbit - Smartbit CommV, BE): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .be, .org.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-ext01-aws-eu-central-1.smartbit.org 3.123.210.115NOERROR, 4 ms, authoritativenoyes / yesrefusedsmscdns
ns-ext01-aws-eu-west-3a.smartbit.org 15.236.229.190NOERROR, 11 ms, authoritativenoyes / yesrefusedsmscdns
ns-ext01-dcg.smartbit.be 193.32.59.91NOERROR, 15 ms, authoritativenoyes / yesrefusedsmscdns
ns-ext01-gs.smartbit.be 193.56.132.91NOERROR, 15 ms, authoritativenoyes / yesrefusedsmscdns

Checks

  • ✓ All respond #14
    All 4 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns-ext01-aws-eu-central-1.smartbit.org: "smscdns"; ns-ext01-aws-eu-west-3a.smartbit.org: "smscdns"; ns-ext01-dcg.smartbit.be: "smscdns"; ns-ext01-gs.smartbit.be: "smscdns".
    #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 2026102001 · primary ns-ext01-dcg.smartbit.be

Found

Primary (MNAME)
ns-ext01-dcg.smartbit.be
Contact (RNAME)
admin.smartbit.be
Serial
2026102001
Refresh / retry
14400 s / 3600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns-ext01-aws-eu-central-1.smartbit.org (3.123.210.115)2026102001
ns-ext01-aws-eu-west-3a.smartbit.org (15.236.229.190)2026102001
ns-ext01-dcg.smartbit.be (193.32.59.91)2026102001
ns-ext01-gs.smartbit.be (193.56.132.91)2026102001

Checks

  • ✓ Serial 2026102001 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-ext01-dcg.smartbit.be is one of the listed nameservers.
  • ✓ Contact admin@smartbit.be #25
    The SOA RNAME admin.smartbit.be means admin@smartbit.be.
  • ✓ Date-based serial #26
    The serial 2026102001 follows the YYYYMMDDnn convention (2026-10-20).

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

16 records at the apex

Found

Read from
3.123.210.115:53
TypeValueTTL
SOAns-ext01-dcg.smartbit.be. admin.smartbit.be. 2026102001 14400 3600 604800 30086400
NSns-ext01-gs.smartbit.be.86400
NSns-ext01-dcg.smartbit.be.86400
NSns-ext01-aws-eu-west-3a.smartbit.org.86400
NSns-ext01-aws-eu-central-1.smartbit.org.86400
A193.56.132.113300
MX10 mail-smsc.smartbit.be.3600
TXT"v=spf1 include:_spf-dcg.smartbit.be include:_spf-gs.smartbit.be include:mail.zendesk.com ~all"300
TXT"VtIKZSe+JO62H7RjoNDzH8LD2EdvmTVPuwLytlNV8Tg="300
TXT"92mr1mf2rqzbl4mllnj3c7y0q6cbhyyl"300
TXT"google-site-verification=RhEqvy0Ia2TT5lQpZpAEj9ZlmKx6jYjlYiW5c5NxL-I"300
TXT"globalsign-domain-verification=hvw4_av-U8pzcM2GwlGFk8ai_Rtav0-loP6GG5MAHf"300
TXT"duo_sso_verification=QRVtVfW1c9BASbQxLch8UdXj7vIxoN4cC3QNI1TYA4PP7m1jZJMQPaQk4avnUBGQ"300
TXT"MS=ms89367326"300
TXT"1password-site-verification=ICSKHG5SWZCADHOL5MJEF4M5JM"300
TXT"have-i-been-pwned-verification=dweb_fojiolat47jfvjxvejd89wfu"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, NS 1d.
  • ✓ 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