ecp.fr

Checked 22 October 2026, 02:40 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 warnings 0 failed 7 info

Registration

info

.fr country-code · GIP RENATER · expires 2026-12-31

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
GIP RENATER
Registered
31 December 1994
Last changed
31 January 2026
Expires
31 December 2026
Status
active
Registry nameservers
ns1-metz.centralesupelec.fr, ns1-rennes.centralesupelec.fr, ns1-saclay.centralesupelec.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 2026-12-31 #3
    The registration is valid until 2026-12-31 (70 days).
  • i
    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.

Delegation

warn

ns1-metz.centralesupelec.fr, ns1-rennes.centralesupelec.fr, ns1-saclay.centralesupelec.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
ns1-metz.centralesupelec.fr, ns1-rennes.centralesupelec.fr, ns1-saclay.centralesupelec.fr
NS in the zone
ns1-metz.centralesupelec.fr, ns1-rennes.centralesupelec.fr, ns1-saclay.centralesupelec.fr
NameserverAddressesNetwork (AS)Glue
ns1-metz.centralesupelec.fr193.48.224.3AS2200 FR-RENATER - Renater, FR193.48.224.3
ns1-rennes.centralesupelec.fr193.54.192.54AS2200 FR-RENATER - Renater, FR193.54.192.54
ns1-saclay.centralesupelec.fr138.195.193.12AS2200 FR-RENATER - Renater, FR138.195.193.12

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1-metz.centralesupelec.fr, ns1-rennes.centralesupelec.fr, ns1-saclay.centralesupelec.fr.
  • ✓ 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 3 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

Nameservers

info

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1-metz.centralesupelec.fr 193.48.224.3NOERROR, 22 ms, authoritativenoyes / yesrefusedNot available
ns1-rennes.centralesupelec.fr 193.54.192.54NOERROR, 21 ms, authoritativenoyes / yesrefusedNot available
ns1-saclay.centralesupelec.fr 138.195.193.12NOERROR, 23 ms, authoritativenoyes / yesrefusedNot available

Checks

  • ✓ 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1-metz.centralesupelec.fr: "Not available"; ns1-rennes.centralesupelec.fr: "Not available"; ns1-saclay.centralesupelec.fr: "Not available".
    #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

info

serial 2025101601 · primary ns-master.centralesupelec.fr

Found

Primary (MNAME)
ns-master.centralesupelec.fr
Contact (RNAME)
hostmaster.ecp.fr
Serial
2025101601
Refresh / retry
14400 s / 3600 s
Expire
604800 s
Negative TTL
43200 s

Serial per nameserver

NameserverSerial
ns1-metz.centralesupelec.fr (193.48.224.3)2025101601
ns1-rennes.centralesupelec.fr (193.54.192.54)2025101601
ns1-saclay.centralesupelec.fr (138.195.193.12)2025101601

Checks

  • ✓ Serial 2025101601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 7d, negative TTL 12h.
  • i
    Hidden master
    The primary nameserver ns-master.centralesupelec.fr is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact hostmaster@ecp.fr #25
    The SOA RNAME hostmaster.ecp.fr means hostmaster@ecp.fr.
  • ✓ Date-based serial #26
    The serial 2025101601 follows the YYYYMMDDnn convention (2025-10-16).

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

10 records at the apex

Found

Read from
193.48.224.3:53
TypeValueTTL
SOAns-master.centralesupelec.fr. hostmaster.ecp.fr. 2025101601 14400 3600 604800 4320043200
NSns1-rennes.centralesupelec.fr.43200
NSns1-saclay.centralesupelec.fr.43200
NSns1-metz.centralesupelec.fr.43200
MX10 mx2.relay.renater.fr.259200
MX10 mx1.relay.renater.fr.259200
TXT"MS=ms56349381"300
TXT"v=spf1 include:centralesupelec.fr ~all"300
TXT"google-site-verification=o_7aW2j141o0SMsixjtZwhkSDUaw-h7NkLn-UkcwxGw"300
TXT"V+j7Css3YKb8uv9cz20sKW3vJiVgkLJMAR/Ayv08TS6fmvtDLh9Ma34ClwCSklrkjI2PcFlcDqPgFVFTLwRxzQ=="300

Checks

  • ✓ TTLs within range #32
    TTLs: MX 3d, NS 12h. The NS TTL at the parent is 1h and in the zone 12h; 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