centralesupelec.fr

.fr country-code · GANDI · expires 2027-06-06

Found

TLD

.fr (country-code)

ICANN policies apply

no

Registrar

GANDI

Registered

6 June 2011

Last changed

12 May 2026

Expires

6 June 2027

Status

client transfer prohibited

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 2027-06-06 #3

  The registration is valid until 2027-06-06 (227 days).
• ✓ Transfer locked #4

  Registry status: client transfer prohibited.
• ✓ Registry and delegation match #5

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

3 of 3 addresses answer authoritatively

Found

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.

serial 2026102101 · primary ns.centralesupelec.fr

Found

Primary (MNAME)

ns.centralesupelec.fr

Contact (RNAME)

hostmaster.centralesupelec.fr

Serial

2026102101

Refresh / retry

21600 s / 3600 s

Expire

3600000 s

Negative TTL

86400 s

Serial per nameserver

Checks

• ✓ Serial 2026102101 everywhere #22

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

  SOA refresh 6h, retry 1h, expire 1000h, negative TTL 1d.
• i

  Hidden master

  The primary nameserver ns.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@centralesupelec.fr #25

  The SOA RNAME hostmaster.centralesupelec.fr means hostmaster@centralesupelec.fr.
• ✓ Date-based serial #26

  The serial 2026102101 follows the YYYYMMDDnn convention (2026-10-21).