centralelille.fr

Checked 22 October 2026, 02:10 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 warnings 0 failed 7 info

Registration

info

.fr country-code · GIP RENATER · expires 2027-07-27

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
GIP RENATER
Registered
27 July 2015
Last changed
31 August 2026
Expires
27 July 2027
Status
active
Registry nameservers
ns1.centralelille.fr, ns2.centralelille.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 2027-07-27 #3
    The registration is valid until 2027-07-27 (278 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.centralelille.fr, ns2.centralelille.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
ns1.centralelille.fr, ns2.centralelille.fr
NS in the zone
ns1.centralelille.fr, ns2.centralelille.fr
NameserverAddressesNetwork (AS)Glue
ns1.centralelille.fr193.51.52.21AS2200 FR-RENATER - Renater, FR193.51.52.21
ns2.centralelille.fr193.51.52.22AS2200 FR-RENATER - Renater, FR193.51.52.22

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.centralelille.fr, ns2.centralelille.fr.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns1.centralelille.fr, ns2.centralelille.fr.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • !
    Nameservers in one network
    all IPv4 addresses are in 193.51.52.0/24. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS2200 (FR-RENATER - Renater, FR): 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
ns1.centralelille.fr 193.51.52.21NOERROR, 20 ms, authoritativenoyes / yesrefusedOups, forgotten version
ns2.centralelille.fr 193.51.52.22NOERROR, 16 ms, authoritativenoyes / yesrefusedOups, forgotten version

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: ns1.centralelille.fr: "Oups, forgotten version"; ns2.centralelille.fr: "Oups, forgotten version".
    #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 1792396031 · primary masterdns.centralelille.fr

Found

Primary (MNAME)
masterdns.centralelille.fr
Contact (RNAME)
hostmaster.centralelille.fr
Serial
1792396031
Refresh / retry
3600 s / 1800 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.centralelille.fr (193.51.52.21)1792396031
ns2.centralelille.fr (193.51.52.22)1792396031

Checks

  • ✓ Serial 1792396031 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 30m, expire 7d, negative TTL 1d.
  • i
    Hidden master (not resolvable)
    The primary nameserver masterdns.centralelille.fr is not listed as a nameserver and does not resolve publicly: a hidden master, or a placeholder name. Some tools (e.g. dynamic updates) use MNAME to find the primary.
    #24
  • ✓ Contact hostmaster@centralelille.fr #25
    The SOA RNAME hostmaster.centralelille.fr means hostmaster@centralelille.fr.
  • ✓ Timestamp serial #26
    The serial 1792396031 is a Unix timestamp (2026-10-19 07:47 UTC).

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

pass

15 records at the apex

Found

Read from
193.51.52.21:53
TypeValueTTL
SOAmasterdns.centralelille.fr. hostmaster.centralelille.fr. 1792396031 3600 1800 604800 86400500
NSns1.centralelille.fr.500
NSns2.centralelille.fr.500
A109.234.166.131500
MX10 vade-mx-fr01.hornetsecurity.com.500
MX20 vade-mx-eu-fallback02.hornetsecurity.com.500
MX20 vade-mx-eu-fallback01.hornetsecurity.com.500
MX10 vade-mx-fr02.hornetsecurity.com.500
TXT"SYUlAp17HP6LvDfQxMvHWji2870="500
TXT"ZOOM_verify_67glO0PZTVn1iOrTnVsSz5"500
TXT"v=spf1 mx a include:spf.hornetsecurity.com -all"500
TXT"HARICA-wW5mUO0qwHz4fPnpzNJ"500
CAA0 issuewild "harica.gr"500
CAA0 issue "letsencrypt.org"500
CAA0 issue "harica.gr"500

Checks

  • ✓ TTLs within range #32
    TTLs: A 8m20s, MX 8m20s, NS 8m20s. The NS TTL at the parent is 1h and in the zone 8m20s; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: harica.gr, letsencrypt.org.