uclouvain.be

Checked 22 October 2026, 07:20 UTC · via 8.8.8.8
!Passed with warnings
28 passed 1 warning 0 failed 4 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

ns1.belnet.be, ns1.sri.ucl.ac.be, ns2.belnet.be, ns2.sri.ucl.ac.be, ns3.belnet.be, ns3.sri.ucl.ac.be

Found

Parent zone
be
Delegation from
a.nsset.be (194.0.6.1)
NS at the parent
ns1.belnet.be, ns1.sri.ucl.ac.be, ns2.belnet.be, ns2.sri.ucl.ac.be, ns3.belnet.be, ns3.sri.ucl.ac.be
NS in the zone
ns1.belnet.be, ns1.sri.ucl.ac.be, ns2.belnet.be, ns2.sri.ucl.ac.be, ns3.belnet.be, ns3.sri.ucl.ac.be
NameserverAddressesNetwork (AS)Glue
ns1.belnet.be193.190.198.14 2001:6a8:3c80::14AS2611 BELNET - BELNET, BE AS2611 BELNET - BELNET, BE193.190.198.14 2001:6a8:3c80::14
ns1.sri.ucl.ac.be130.104.1.1 2001:6a8:3081:1::53AS2611 BELNET - BELNET, BE AS2611 BELNET - BELNET, BE-
ns2.belnet.be193.190.182.40 2001:6a8:3c80:c000::40AS2611 BELNET - BELNET, BE AS2611 BELNET - BELNET, BE193.190.182.40 2001:6a8:3c80:c000::40
ns2.sri.ucl.ac.be130.104.1.2 2001:6a8:3081:2::53AS2611 BELNET - BELNET, BE AS2611 BELNET - BELNET, BE-
ns3.belnet.be194.58.196.32 2a01:3f1:832::53AS8674 NETNOD-IX - Netnod AB, SE AS8674 NETNOD-IX - Netnod AB, SE194.58.196.32 2a01:3f1:832::53
ns3.sri.ucl.ac.be130.104.254.1 2001:6a8:3082:1::53AS2611 BELNET - BELNET, BE AS2611 BELNET - BELNET, BE-

Checks

  • ✓ 6 nameservers #6
    Delegated to ns1.belnet.be, ns1.sri.ucl.ac.be, ns2.belnet.be, ns2.sri.ucl.ac.be, ns3.belnet.be, ns3.sri.ucl.ac.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 5 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS2611 (BELNET - BELNET, BE): 10 addresses; AS8674 (NETNOD-IX - Netnod AB, SE): 2 addresses.
  • i
    All nameserver names under .be
    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

info

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.belnet.be 193.190.198.14NOERROR, 13 ms, authoritativenoyes / yesrefusedFor me to know, for you to guess!
ns1.belnet.be 2001:6a8:3c80::14NOERROR, 18 ms, authoritativenoyes / yesrefusedFor me to know, for you to guess!
ns1.sri.ucl.ac.be 130.104.1.1NOERROR, 18 ms, authoritativenoyes / yesrefusednone
ns1.sri.ucl.ac.be 2001:6a8:3081:1::53NOERROR, 18 ms, authoritativenoyes / yesrefusednone
ns2.belnet.be 193.190.182.40NOERROR, 17 ms, authoritativenoyes / yesrefused-
ns2.belnet.be 2001:6a8:3c80:c000::40NOERROR, 18 ms, authoritativenoyes / yesrefused-
ns2.sri.ucl.ac.be 130.104.1.2NOERROR, 18 ms, authoritativenoyes / yesrefusednone
ns2.sri.ucl.ac.be 2001:6a8:3081:2::53NOERROR, 18 ms, authoritativenoyes / yesrefusednone
ns3.belnet.be 194.58.196.32NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns3.belnet.be 2a01:3f1:832::53NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns3.sri.ucl.ac.be 130.104.254.1NOERROR, 19 ms, authoritativenoyes / yesrefusednone
ns3.sri.ucl.ac.be 2001:6a8:3082:1::53NOERROR, 19 ms, authoritativenoyes / yesrefusednone

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.belnet.be: "For me to know, for you to guess!"; ns1.sri.ucl.ac.be: "none"; ns2.sri.ucl.ac.be: "none"; ns3.sri.ucl.ac.be: "none".
    #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 2026101932 · primary ns1.sri.ucl.ac.be

Found

Primary (MNAME)
ns1.sri.ucl.ac.be
Contact (RNAME)
adminet.uclouvain.be
Serial
2026101932
Refresh / retry
7200 s / 900 s
Expire
3600000 s
Negative TTL
10800 s

Serial per nameserver

NameserverSerial
ns1.belnet.be (193.190.198.14)2026101932
ns1.belnet.be (2001:6a8:3c80::14)2026101932
ns1.sri.ucl.ac.be (130.104.1.1)2026101932
ns1.sri.ucl.ac.be (2001:6a8:3081:1::53)2026101932
ns2.belnet.be (193.190.182.40)2026101932
ns2.belnet.be (2001:6a8:3c80:c000::40)2026101932
ns2.sri.ucl.ac.be (130.104.1.2)2026101932
ns2.sri.ucl.ac.be (2001:6a8:3081:2::53)2026101932
ns3.belnet.be (194.58.196.32)2026101932
ns3.belnet.be (2a01:3f1:832::53)2026101932
ns3.sri.ucl.ac.be (130.104.254.1)2026101932
ns3.sri.ucl.ac.be (2001:6a8:3082:1::53)2026101932

Checks

  • ✓ Serial 2026101932 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 1000h, negative TTL 3h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.sri.ucl.ac.be is one of the listed nameservers.
  • ✓ Contact adminet@uclouvain.be #25
    The SOA RNAME adminet.uclouvain.be means adminet@uclouvain.be.
  • ✓ Date-based serial #26
    The serial 2026101932 follows the YYYYMMDDnn convention (2026-10-19).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
64 iterations, 8-byte salt
Signatures valid until
18 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
51640RSASHA256 (8)SHA256 8D7418986066A427…yes

DNSKEY in the zone

Key tagRoleAlgorithm
28923ZSK (256)RSASHA256 (8)
51640KSK (257)RSASHA256 (8)

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 51640 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Signatures valid until 2026-11-18 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-18 08:11 UTC.
  • !
    NSEC3 with extra iterations or salt
    NSEC3 uses 64 iterations and a 8-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

27 records at the apex

Found

Read from
193.190.198.14:53
TypeValueTTL
SOAns1.sri.ucl.ac.be. adminet.uclouvain.be. 2026101932 7200 900 3600000 1080010800
NSns2.belnet.be.604800
NSns3.sri.ucl.ac.be.604800
NSns3.belnet.be.604800
NSns1.sri.ucl.ac.be.604800
NSns2.sri.ucl.ac.be.604800
NSns1.belnet.be.604800
A130.104.33.32300
AAAA2001:6a8:3081:1010:a::20300
MX1 uclouvain-be.mail.protection.outlook.com.3600
TXT"7U6NJ5oO1N+vL5O4R425eudYGKMkxssuHJO1HWT6kLIs9ucloZxTpTntj3Mz/ZGPplBVL0zguDWvL4Ur+4zfPg=="86400
TXT"HARICA-LLRKC1OPJfy0sZpQrCD"86400
TXT"google-site-verification=dZXhurTktoDrklTW_FYVSImHIpHhnPy9knqu9M4c7Dw"86400
TXT"spycloud-domain-verification=744107e5-7ce2-4a07-8b92-4aefb1177e34"86400
TXT"MS=ms66087194"86400
TXT"apple-domain-verification=keqKoQoRqpcZ70zg"86400
TXT"google-site-verification=Ml1v6XgZ2Q7Cufq7CfRZc4kQbA3aTFzY_Th3ihTL5ws"86400
TXT"autodesk-domain-verification=BDKP-0Qz_DI0caWgmKs6"86400
TXT"atlassian-domain-verification=LYBkpaueQPRqIZAWLYYTSFymKFmZRiaBdwUyo1X2/QMuaFRMuXHNyJ737E2n9eb2"86400
TXT"google-site-verification=tyy12kWsT5HGOq7UcwGVT0FQ5vawtoBb0T_z_nfpTK4"86400
TXT"atlassian-sending-domain-verification=20fc2b18-b238-4c87-9915-293ff46f4254"86400
TXT"atlassian-sending-domain-verification=19d3d6cb-76c6-4c7f-ba14-f2bb44e1be88"86400
TXT"adobe-idp-site-verification=aab56a2a1fb099c5007a50f00d0341cbbf9cdaffd8ecf6e0fa6737d17f2fc42f"86400
TXT"v=spf1 ip4:130.104.0.0/16 ip4:193.190.244.6 ip6:2001:6a8:3081:10f1::/121 include:spf.protection.outlook.com include:spf.mandrillapp.com include:_spf-dc33.sapsf.eu include:_spf.createsend.com a:mail.sop-at.com" " include:spf.mtasv.net -all"86400
CAA0 issue "amazontrust.com"86400
CAA0 iodef "mailto:abuse@uclouvain.be"86400
CAA0 issue "harica.gr"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 1h, NS 7d. The NS TTL at the parent is 1d and in the zone 7d; 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: amazontrust.com, harica.gr.