Domain report: mathiasbynens.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

info

ns1.exsilia.net, ns2.exsilia.net

Nameserver	Addresses	Network (AS)	Glue
ns1.exsilia.net	83.137.146.53 2a01:1b0:4418::53	AS31477 DUOCAST-AS - Duocast B.V., NL AS31477 DUOCAST-AS - Duocast B.V., NL	-
ns2.exsilia.net	91.209.7.53 2a01:1b1:4418::53	AS39292 DUOCASTBACKUP-AS - Duocast B.V., NL AS39292 DUOCASTBACKUP-AS - Duocast B.V., NL	-

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.exsilia.net, ns2.exsilia.net.

#6
✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS31477 (DUOCAST-AS - Duocast B.V., NL): 2 addresses; AS39292 (DUOCASTBACKUP-AS - Duocast B.V., NL): 2 addresses.
i

All nameserver names under .net

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.

pass

4 of 4 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.exsilia.net 83.137.146.53	NOERROR, 13 ms, authoritative	no	yes / yes	refused	-
ns1.exsilia.net 2a01:1b0:4418::53	NOERROR, 13 ms, authoritative	no	yes / yes	refused	-
ns2.exsilia.net 91.209.7.53	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-
ns2.exsilia.net 2a01:1b1:4418::53	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-

✓ 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.
✓ No version disclosed #17

The nameservers don't reveal their software version.
✓ 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 2026082701 · primary ns2.exsilia.net

✓ Serial 2026082701 everywhere #22

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

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

The primary nameserver ns2.exsilia.net is one of the listed nameservers.
✓ Contact r.broersma@exsilia.net #25

The SOA RNAME r\.broersma.exsilia.net means r.broersma@exsilia.net.
✓ Date-based serial #26

The serial 2026082701 follows the YYYYMMDDnn convention (2026-08-27).

warn

Not signed

info

12 records at the apex

Type	Value	TTL
SOA	ns2.exsilia.net. r\.broersma.exsilia.net. 2026082701 10800 3600 604800 10800	86400
NS	ns2.exsilia.net.	86400
NS	ns1.exsilia.net.	86400
A	83.137.145.144	86400
AAAA	2a01:1b0:7999:402::144	86400
MX	20 alt2.aspmx.l.google.com.	86400
MX	10 aspmx.l.google.com.	86400
MX	30 aspmx3.googlemail.com.	86400
MX	30 aspmx4.googlemail.com.	86400
MX	30 aspmx2.googlemail.com.	86400
MX	30 aspmx5.googlemail.com.	86400
TXT	"v=spf1 include:_spf.google.com ip4:83.137.145.0/24 ip6:2a01:1b0:7999:402::0/24 ~all"	86400