Domain report: ecole-navale.fr

Registration

info

.fr country-code · GIP RENATER · expires 2027-09-28

i

.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 2027-09-28 #3

The registration is valid until 2027-09-28 (341 days).
i

No transfer lock

The domain has no transfer lock (status: active, auto renew period). 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.

fail

cassis-gw.univ-brest.fr, poseidon.ecole-navale.fr

Nameserver	Addresses	Network (AS)	Glue
cassis-gw.univ-brest.fr (parent only)	195.83.247.29	AS2200 FR-RENATER - Renater, FR	-
ns2.univ-brest.fr (zone only)	195.83.247.17	AS2200 FR-RENATER - Renater, FR	-
poseidon.ecole-navale.fr	193.52.4.2	AS2200 FR-RENATER - Renater, FR	193.52.4.2

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: cassis-gw.univ-brest.fr, poseidon.ecole-navale.fr.

#6
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only at the parent: cassis-gw.univ-brest.fr; only in the zone: ns2.univ-brest.fr. poseidon.ecole-navale.fr report NS ns2.univ-brest.fr poseidon.ecole-navale.fr.

#7
✓ Glue present and correct #8

Glue is published for the nameservers inside the zone: poseidon.ecole-navale.fr.
✗

Nameserver names are CNAMEs

Nameserver names must not be aliases (RFC 2181 10.3): cassis-gw.univ-brest.fr -> rslv0.univ-brest.fr.

#9
✓ Nameservers in different networks #10

The nameservers are spread over 2 IPv4 /24s and 0 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS2200 (FR-RENATER - Renater, 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
i

All nameserver names under .fr

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

1 of 3 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
cassis-gw.univ-brest.fr 195.83.247.29	no response	no	no / no	-	-
ns2.univ-brest.fr 195.83.247.17	SERVFAIL, 35 ms, NOT authoritative	no	no / yes	refused	-
poseidon.ecole-navale.fr 193.52.4.2	NOERROR, 34 ms, authoritative	no	no / yes	refused	-

✗

Nameservers not responding

These addresses did not answer, so resolvers waste time on timeouts: cassis-gw.univ-brest.fr (195.83.247.29): read udp 46.225.38.91:52951->195.83.247.29:53: i/o timeout.

#14
✗

Lame delegation

These nameservers don't answer authoritatively for the zone, so resolvers ignore them: ns2.univ-brest.fr (195.83.247.17): SERVFAIL, authoritative=false.

#15
✓ 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.
✗

No DNS over TCP

DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns2.univ-brest.fr (195.83.247.17): ; poseidon.ecole-navale.fr (193.52.4.2): dial tcp 193.52.4.2:53: i/o timeout.

#19
✓ EDNS supported #20

All nameservers support EDNS(0).
✓ Public addresses #21

All nameserver addresses are publicly routable.

pass

serial 2026051404 · primary poseidon.ecole-navale.fr

✓ Serial 2026051404 everywhere #22

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

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

The primary nameserver poseidon.ecole-navale.fr is one of the listed nameservers.
✓ Contact postmaster@ecole-navale.fr #25

The SOA RNAME postmaster.ecole-navale.fr means postmaster@ecole-navale.fr.
✓ Date-based serial #26

The serial 2026051404 follows the YYYYMMDDnn convention (2026-05-14).

warn

Not signed

info

14 records at the apex

Type	Value	TTL
SOA	poseidon.ecole-navale.fr. postmaster.ecole-navale.fr. 2026051404 28800 7200 604800 86400	86400
NS	ns2.univ-brest.fr.	86400
NS	poseidon.ecole-navale.fr.	86400
A	146.88.235.177	86400
MX	50 mxa.relay.renater.fr.	86400
MX	50 mx2.relay.renater.fr.	86400
MX	50 mxc.relay.renater.fr.	86400
MX	50 mx1.relay.renater.fr.	86400
MX	50 mxd.relay.renater.fr.	86400
MX	50 mxb.relay.renater.fr.	86400
TXT	"globalsign-domain-verification=05F5E31306CB695517B56ACE1983FD02"	86400
TXT	"v=spf1 ip4:193.52.4.3 ip4:146.88.235.177 ip4:145.239.119.10 ip4:178.33.142.44 include:spf.eudonet.com include:spf.relay.renater.fr ~all"	86400
TXT	"mandrill_verify.4wqnMiHVlMYbUsUQqn9bkg"	86400
TXT	"MS=3B1E9E798F7226E7BCFF5A2312FCFCDFE317A025"	86400

✓ TTLs within range #32

TTLs: A 1d, MX 1d, NS 1d. The NS TTL at the parent is 1h and in the zone 1d; 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.
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