Domain report: refdoc.fr

Registration

info

.fr country-code · IONOS SE · expires 2027-05-12

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.fr 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

.fr is delegated in the root zone and DNSSEC-signed.
✓ Expires on 2027-05-12 #3

The registration is valid until 2027-05-12 (202 days).
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No transfer lock

The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.

#4
✓ Registry and delegation match #5

The nameservers registered at the registry are the ones published in DNS.

warn

britney.nexylan.net, michael.nexylan.net

Parent zone: fr
Delegation from: d.nic.fr (194.0.9.1)
NS at the parent: britney.nexylan.net, michael.nexylan.net
NS in the zone: britney.nexylan.net, justin.nexylan.net, michael.nexylan.net

Nameserver	Addresses	Network (AS)	Glue
britney.nexylan.net	185.46.228.20	AS199758 NEXYLAN - SAS Nexylan, FR	-
justin.nexylan.net (zone only)	91.132.252.5	AS199758 NEXYLAN - SAS Nexylan, FR	-
michael.nexylan.net	185.46.228.14	AS199758 NEXYLAN - SAS Nexylan, FR	-

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2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: britney.nexylan.net, michael.nexylan.net.

#6
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only in the zone: justin.nexylan.net. britney.nexylan.net, justin.nexylan.net, michael.nexylan.net report NS britney.nexylan.net justin.nexylan.net michael.nexylan.net.

#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 different networks #10

The nameservers are spread over 2 IPv4 /24s and 0 IPv6 /48s.
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All nameservers in one AS

All nameserver addresses are announced by one network operator (AS199758 (NEXYLAN - SAS Nexylan, FR): 3 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
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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
!

No IPv6

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

#13

warn

3 of 3 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
britney.nexylan.net 185.46.228.20	NOERROR, 17 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 5.0.7 (built Aug 6 2026 00:00:00 by mockbuild@localhost)
justin.nexylan.net 91.132.252.5	NOERROR, 23 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 5.0.7 (built Aug 6 2026 00:00:00 by mockbuild@localhost)
michael.nexylan.net 185.46.228.14	NOERROR, 17 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 5.0.7 (built Aug 6 2026 00:00:00 by mockbuild@localhost)

✓ All respond #14

All 3 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.
!

Software version disclosed

These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: britney.nexylan.net: "PowerDNS Authoritative Server 5.0.7 (built Aug 6 2026 00:00:00 by mockbuild@localhost)"; justin.nexylan.net: "PowerDNS Authoritative Server 5.0.7 (built Aug 6 2026 00:00:00 by mockbuild@localhost)"; michael.nexylan.net: "PowerDNS Authoritative Server 5.0.7 (built Aug 6 2026 00:00:00 by mockbuild@localhost)". Hide or replace the version string.

#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 2026100201 · primary justin.nexylan.net

✓ Serial 2026100201 everywhere #22

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

SOA refresh 8h, retry 2h, expire 7d, negative TTL 1h.
✓ Primary is a public nameserver #24

The primary nameserver justin.nexylan.net is one of the listed nameservers.
✓ Contact hostmaster@nexylan.net #25

The SOA RNAME hostmaster.nexylan.net means hostmaster@nexylan.net.
✓ Date-based serial #26

The serial 2026100201 follows the YYYYMMDDnn convention (2026-10-02).

warn

Not signed

info

12 records at the apex

Type	Value	TTL
SOA	justin.nexylan.net. hostmaster.nexylan.net. 2026100201 28800 7200 604800 3600	3600
NS	britney.nexylan.net.	3600
NS	michael.nexylan.net.	3600
NS	justin.nexylan.net.	3600
A	185.153.8.135	300
MX	10 mx1.nexylan.net.	3600
MX	20 mx2.nexylan.net.	3600
TXT	"Sendinblue-code:772129069edda438d650ea1bd24b2ac5"	300
TXT	"v=spf1 include:spf.laposte.net mx ~all"	300
TXT	"v=spf1 include:spf.sendinblue.com mx ~all"	300
TXT	"v=spf1 a mx include:nexylan.net -all"	3600
TXT	"v=spf1 include:spf.sfr.fr mx -all"	300