cedre.fr

Checked 22 October 2026, 02:10 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 6 info

Registration

info

.fr country-code · OVH · expires 2027-08-13

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
OVH
Registered
2 February 2004
Last changed
15 November 2025
Expires
13 August 2027
Status
client transfer prohibited, client delete prohibited
Registry nameservers
brehat.ifremer.fr, vns1.ifremer.fr
RDAP server
https://rdap.nic.fr/

Checks

  • 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 2027-08-13 #3
    The registration is valid until 2027-08-13 (295 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, client delete prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

brehat.ifremer.fr, vns1.ifremer.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
brehat.ifremer.fr, vns1.ifremer.fr
NS in the zone
brehat.ifremer.fr, vns1.ifremer.fr
NameserverAddressesNetwork (AS)Glue
brehat.ifremer.fr134.246.166.1AS2103 FR-IFREMER-BREST - Renater, EU134.246.166.1
vns1.ifremer.fr134.246.155.6AS2103 FR-IFREMER-BREST - Renater, EU134.246.155.6

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: brehat.ifremer.fr, vns1.ifremer.fr.
    #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 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS2103 (FR-IFREMER-BREST - Renater, EU): 2 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

Nameservers

info

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
brehat.ifremer.fr 134.246.166.1NOERROR, 24 ms, authoritativenoyes / yesrefusedIfremer
vns1.ifremer.fr 134.246.155.6NOERROR, 24 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 2 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: brehat.ifremer.fr: "Ifremer".
    #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 2026100601 · primary vns1.ifremer.fr

Found

Primary (MNAME)
vns1.ifremer.fr
Contact (RNAME)
assistance.ifremer.fr
Serial
2026100601
Refresh / retry
3600 s / 900 s
Expire
3600000 s
Negative TTL
7201 s

Serial per nameserver

NameserverSerial
brehat.ifremer.fr (134.246.166.1)2026100601
vns1.ifremer.fr (134.246.155.6)2026100601

Checks

  • ✓ Serial 2026100601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 15m, expire 1000h, negative TTL 2h0m1s.
  • ✓ Primary is a public nameserver #24
    The primary nameserver vns1.ifremer.fr is one of the listed nameservers.
  • ✓ Contact assistance@ifremer.fr #25
    The SOA RNAME assistance.ifremer.fr means assistance@ifremer.fr.
  • ✓ Date-based serial #26
    The serial 2026100601 follows the YYYYMMDDnn convention (2026-10-06).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

8 records at the apex

Found

Read from
134.246.166.1:53
TypeValueTTL
SOAvns1.ifremer.fr. assistance.ifremer.fr. 2026100601 3600 900 3600000 720186400
NSvns1.ifremer.fr.86400
NSbrehat.ifremer.fr.86400
A51.83.122.19086400
MX10 guernesey.ifremer.fr.86400
TXT"v=spf1 include:spf.mailjet.com a:gwyddion.ifremer.fr -all"86400
TXT"MS=3D81544435DDCA0679C696046EDF70A28F1B1DA9"86400
TXT"google-site-verification=opgOJVeEwndw2otB4mT-TWpYlAQZchoUIY8lzOuJZWg"86400

Checks

  • ✓ 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