Domain report: zemst.be

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

pass

ns1.combell.eu, ns3.combell.net, ns4.combell.net

Found

Parent zone: be
Delegation from: a.nsset.be (194.0.6.1)
NS at the parent: ns1.combell.eu, ns3.combell.net, ns4.combell.net
NS in the zone: ns1.combell.eu, ns3.combell.net, ns4.combell.net

Nameserver	Addresses	Network (AS)	Glue
ns1.combell.eu	89.44.166.48 2a00:1c98:50::50	AS34762 COMBELL-AS - Combell NV, BE AS34762 COMBELL-AS - Combell NV, BE	-
ns3.combell.net	83.217.73.172 2a00:1c98::53:1	AS34762 COMBELL-AS - Combell NV, BE AS34762 COMBELL-AS - Combell NV, BE	-
ns4.combell.net	86.39.202.67 2001:1598:0:101::3	AS28747 EASYHOST-COLO-AS - Easyhost BVBA, BE AS28747 EASYHOST-COLO-AS - Easyhost BVBA, BE	-

Checks

✓ 3 nameservers #6

Delegated to ns1.combell.eu, ns3.combell.net, ns4.combell.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 3 IPv4 /24s and 3 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS28747 (EASYHOST-COLO-AS - Easyhost BVBA, BE): 2 addresses; AS34762 (COMBELL-AS - Combell NV, BE): 4 addresses.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .eu, .net.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

info

6 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.combell.eu 89.44.166.48	NOERROR, 10 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns1.combell.eu 2a00:1c98:50::50	NOERROR, 10 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns3.combell.net 83.217.73.172	NOERROR, 14 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns3.combell.net 2a00:1c98::53:1	NOERROR, 14 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns4.combell.net 86.39.202.67	NOERROR, 13 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns4.combell.net 2001:1598:0:101::3	NOERROR, 14 ms, authoritative	no	yes / yes	refused	You are on a need to know basis

Checks

✓ All respond #14

All 6 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: ns1.combell.eu: "You are on a need to know basis"; ns3.combell.net: "You are on a need to know basis"; ns4.combell.net: "You are on a need to know basis".

#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 1787566179 · primary ns3.combell.net

Found

Primary (MNAME): ns3.combell.net
Contact (RNAME): hostmaster.zemst.be
Serial: 1787566179
Refresh / retry: 10800 s / 3600 s
Expire: 604800 s
Negative TTL: 40000 s

Serial per nameserver

Nameserver	Serial
ns1.combell.eu (89.44.166.48)	1787566179
ns1.combell.eu (2a00:1c98:50::50)	1787566179
ns3.combell.net (83.217.73.172)	1787566179
ns3.combell.net (2a00:1c98::53:1)	1787566179
ns4.combell.net (86.39.202.67)	1787566179
ns4.combell.net (2001:1598:0:101::3)	1787566179

Checks

✓ Serial 1787566179 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 3h, retry 1h, expire 7d, negative TTL 11h6m40s.
✓ Primary is a public nameserver #24

The primary nameserver ns3.combell.net is one of the listed nameservers.
✓ Contact hostmaster@zemst.be #25

The SOA RNAME hostmaster.zemst.be means hostmaster@zemst.be.
✓ Timestamp serial #26

The serial 1787566179 is a Unix timestamp (2026-08-24 10:09 UTC).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 5 iterations, 4-byte salt
Signatures valid until: 5 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
50217	ECDSAP256SHA256 (13)	SHA256 B1944C0ACAF31872…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
50217	KSK (257)	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 50217 (SHA256).
✓ 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 5 iterations and a 4-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

pass

21 records at the apex

Found

Read from: 89.44.166.48:53

Type	Value	TTL
SOA	ns3.combell.net. hostmaster.zemst.be. 1787566179 10800 3600 604800 40000	3600
NS	ns3.combell.net.	3600
NS	ns4.combell.net.	3600
NS	ns1.combell.eu.	3600
A	193.110.252.85	900
MX	0 zemst-be.mail.protection.outlook.com.	3600
TXT	"_globalsign-domain-verification=Bs7l2mtKJvdbYz8H5y-I4ut7cHD5pQsGOQQWPxvaNU"	3600
TXT	"_globalsign-domain-verification=Yt3-hoO8Zzez6OkqgTArrYlUYJ4EYDLPjd-AexA5Um"	3600
TXT	"brevo-code:73c816e936b0d88c61d16fdba96c7b72"	3600
TXT	"facebook-domain-verification=r0eqd2h5xemksmfenhzt9ymdoewxym"	3600
TXT	"_globalsign-domain-verification=MuMLBYvS9wmNgnw99tmnDDsLK4Z_2T3-VnDrNN15S9"	3600
TXT	"_globalsign-domain-verification=XDEngx6CrQQ2a3i27_sVpdjk12KJkjNOyMhVV1qBFn"	3600
TXT	"v=spf1 include:spf.flexmail.eu include:spf.protection.outlook.com include:spf.lcp.be ip4:46.182.193.82 include:spf.ciport.be include:spf.brevo.com include:_spf.root.nl include:oclcspf3.oclc.org include:_spf.eu.sparkpostmail.com -all"	3600
TXT	"MS=ms94213437"	3600
CAA	0 issuewild "letsencrypt.org"	3600
CAA	0 issuewild "digicert.com"	3600
CAA	0 issue "globalsign.com"	3600
CAA	0 issue "digicert.com"	3600
CAA	0 issue "letsencrypt.org"	3600
CAA	0 iodef "mailto:ict@zemst.be"	3600
CAA	0 issuewild "globalsign.com"	3600

Checks

✓ TTLs within range #32

TTLs: A 15m, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
✓ 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: letsencrypt.org, digicert.com, globalsign.com.