Domain report: arllfb.be

Registration

info

.be country-code

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

warn

ns1.net7.be, nsb.net7.be, nsc.net7.be

Nameserver	Addresses	Network (AS)	Glue
ns.arllfb.be (zone only)	212.3.255.210	AS3356 LEVEL3 - Level 3 Parent, LLC, US	-
ns1.net7.be (parent only)	212.3.255.202	AS3356 LEVEL3 - Level 3 Parent, LLC, US	-
nsa.net7.be (zone only)	212.3.255.202	AS3356 LEVEL3 - Level 3 Parent, LLC, US	-
nsb.net7.be	212.3.255.211	AS3356 LEVEL3 - Level 3 Parent, LLC, US	212.3.255.211
nsc.net7.be	212.3.255.211	AS3356 LEVEL3 - Level 3 Parent, LLC, US	212.3.255.211

✓ 3 nameservers #6

Delegated to ns1.net7.be, nsb.net7.be, nsc.net7.be.
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only at the parent: ns1.net7.be; only in the zone: ns.arllfb.be, nsa.net7.be. ns1.net7.be, nsa.net7.be, nsb.net7.be, nsc.net7.be report NS ns.arllfb.be nsa.net7.be nsb.net7.be nsc.net7.be.

#7
✓ 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 one network

all IPv4 addresses are in 212.3.255.0/24. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).

#10
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS3356 (LEVEL3 - Level 3 Parent, LLC, US): 5 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 .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
!

No IPv6

None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.

#13

fail

4 of 5 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns.arllfb.be 212.3.255.210	no response	no	no / no	-	-
ns1.net7.be 212.3.255.202	NOERROR, 23 ms, authoritative	no	yes / yes	refused	-
nsa.net7.be 212.3.255.202	NOERROR, 23 ms, authoritative	no	yes / yes	refused	-
nsb.net7.be 212.3.255.211	NOERROR, 24 ms, authoritative	no	yes / yes	refused	unknown
nsc.net7.be 212.3.255.211	NOERROR, 21 ms, authoritative	no	yes / yes	refused	unknown

✗

Nameservers not responding

These addresses did not answer, so resolvers waste time on timeouts: ns.arllfb.be (212.3.255.210): read udp 46.225.38.91:35452->212.3.255.210:53: i/o timeout.

#14
✓ 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: nsb.net7.be: "unknown"; nsc.net7.be: "unknown".

#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.

pass

serial 1596534235 · primary ns.arllfb.be

✓ Serial 1596534235 everywhere #22

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

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

The primary nameserver ns.arllfb.be is one of the listed nameservers.
✓ Contact alain@esterzon.skynet.be #25

The SOA RNAME alain.esterzon.skynet.be means alain@esterzon.skynet.be.
✓ Timestamp serial #26

The serial 1596534235 is a Unix timestamp (2020-08-04 09:43 UTC).

warn

Not signed

info

8 records at the apex

Type	Value	TTL
SOA	ns.arllfb.be. alain.esterzon.skynet.be. 1596534235 10800 3600 604800 86400	86400
NS	nsa.net7.be.	86400
NS	nsb.net7.be.	86400
NS	nsc.net7.be.	86400
NS	ns.arllfb.be.	86400
A	212.3.255.174	86400
MX	10 mxpool1.net7.be.	86400
MX	50 mxpool2.net7.be.	86400