Domain report: renson.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 1790593264 · primary ns3.combell.net

Found

Primary (MNAME): ns3.combell.net
Contact (RNAME): hostmaster.renson.be
Serial: 1790593264
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)	1790593264
ns1.combell.eu (2a00:1c98:50::50)	1790593264
ns3.combell.net (83.217.73.172)	1790593264
ns3.combell.net (2a00:1c98::53:1)	1790593264
ns4.combell.net (86.39.202.67)	1790593264
ns4.combell.net (2001:1598:0:101::3)	1790593264

Checks

✓ Serial 1790593264 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@renson.be #25

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

The serial 1790593264 is a Unix timestamp (2026-09-28 11:01 UTC).

DNSSEC

warn

Signed, but no DS at parent

Found

Validated by resolver: no
Denial of existence: NSEC3
NSEC3: 5 iterations, 4-byte salt
Signatures valid until: 5 November 2026

DNSKEY in the zone

Key tag	Role	Algorithm
2495	KSK (257)	ECDSAP256SHA256 (13)

Checks

!

Signed but not delegated securely

The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.

#27
✓ 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

warn

23 records at the apex

Found

Read from: 89.44.166.48:53

Type	Value	TTL
SOA	ns3.combell.net. hostmaster.renson.be. 1790593264 10800 3600 604800 40000	3600
NS	ns1.combell.eu.	3600
NS	ns4.combell.net.	86400
NS	ns3.combell.net.	86400
A	51.138.57.221	60
MX	10 renson-be.mail.protection.outlook.com.	3600
TXT	"00DUC000003BAgf=1TBUC00000000pd"	3600
TXT	"00Dd1000003r8VZ=1TBTs0000000085"	3600
TXT	"SFMC-eu5SPVpew7M033iO2LOUM8SIemD89vC6LZ31H0CZ"	3600
TXT	"adobe-idp-site-verification=5e0b6b57136dfdc8b15454df5ee58cd253d3a8719ef912418768e5c86b54b99f"	3600
TXT	"apple-domain-verification=aIyBcjPUPHKpm23n"	3600
TXT	"atlassian-domain-verification=akQQ0PMk/41msgFy4UiQV3Y1iMQ8W5WY4aC2bjv3zJAozN51jans7iLSlq2C7bZu"	3600
TXT	"autodesk-domain-verification=0M0k6XarDuTWf5sHAd2t"	3600
TXT	"brevo-code:194306744181e0a40abe15094d473d2e"	3600
TXT	"brevo-code:283d9e2a99501094793b8f704b84b7f1"	3600
TXT	"brevo-code:4df3988470a1b7bbb49eff812a05b1ea"	3600
TXT	"brevo-code:60e94b1ca46389bfd8ab9372c0144a60"	3600
TXT	"brevo-code:a1d7975fe27d025bcf3469ac5a10f5cd"	3600
TXT	"brevo-code:aee77f34ddda7f57a68dce65052926c0"	3600
TXT	"brevo-code:ed1a34f32b41421843082c2a7cc742a3"	3600
TXT	"google-site-verification=QdLWXn-aNqhKP5tWu1OZgIb2YCInteU5bSz4crs1PLY"	3600
TXT	"google-site-verification=vVp2ZSg4gRSHA3CioRv2sk2Rl-OEKYwBfmfICYgcZGI"	3600
TXT	"v=spf1 ip4:81.246.12.210 ip4:185.162.28.154 ip4:185.162.28.156 ip4:87.238.165.18 ip4:217.19.225.129 ip4:212.123.10.161 ip4:193.30.110.211 ip4:5.100.226.189 ip4:5.100.226.190 ip6:2603:10a6::/24 include:spf.protection.outlook.com include:mail.zendesk.com in" "clude:sendgrid.net include:spf.EU.exclaimer.net include:carerix.net include:email1.kayako.com include:_spf.salesforce.com -all"	3600

Checks

!

Very low TTLs

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