istex.fr

Checked 22 October 2026, 03:33 UTC · via 8.8.8.8
!Passed with warnings
24 passed 1 warning 0 failed 6 info

Registration

info

.fr country-code · GIP RENATER · expires 2027-02-24

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
GIP RENATER
Registered
4 April 2012
Last changed
31 March 2026
Expires
24 February 2027
Status
active
Registry nameservers
ns101.inist.fr, ns102.inist.fr, ns4.cnrs.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 2027-02-24 #3
    The registration is valid until 2027-02-24 (125 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

info

ns101.inist.fr, ns102.inist.fr, ns4.cnrs.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
ns101.inist.fr, ns102.inist.fr, ns4.cnrs.fr
NS in the zone
ns101.inist.fr, ns102.inist.fr, ns4.cnrs.fr
NameserverAddressesNetwork (AS)Glue
ns101.inist.fr193.54.109.101AS2200 FR-RENATER - Renater, FR193.54.109.101
ns102.inist.fr193.54.109.102AS2200 FR-RENATER - Renater, FR193.54.109.102
ns4.cnrs.fr195.220.197.11 2001:660:500a:2210::11AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns101.inist.fr, ns102.inist.fr, ns4.cnrs.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 2 IPv4 /24s and 1 IPv6 /48.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS2200 (FR-RENATER - Renater, FR): 4 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns101.inist.fr, ns102.inist.fr.
    #13

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns101.inist.fr 193.54.109.101NOERROR, 20 ms, authoritativenoyes / yesrefusednot currently available
ns102.inist.fr 193.54.109.102NOERROR, 18 ms, authoritativenoyes / yesrefusednot currently available
ns4.cnrs.fr 195.220.197.11NOERROR, 19 ms, authoritativenoyes / yesrefusedSECRET
ns4.cnrs.fr 2001:660:500a:2210::11NOERROR, 19 ms, authoritativenoyes / yesrefusedSECRET

Checks

  • ✓ All respond #14
    All 4 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: ns101.inist.fr: "not currently available"; ns102.inist.fr: "not currently available"; ns4.cnrs.fr: "SECRET".
    #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 2026042800 · primary ns101.inist.fr

Found

Primary (MNAME)
ns101.inist.fr
Contact (RNAME)
dns.inist.fr
Serial
2026042800
Refresh / retry
21600 s / 360 s
Expire
3456000 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns101.inist.fr (193.54.109.101)2026042800
ns102.inist.fr (193.54.109.102)2026042800
ns4.cnrs.fr (195.220.197.11)2026042800
ns4.cnrs.fr (2001:660:500a:2210::11)2026042800

Checks

  • ✓ Serial 2026042800 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 6h, retry 6m, expire 40d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns101.inist.fr is one of the listed nameservers.
  • ✓ Contact dns@inist.fr #25
    The SOA RNAME dns.inist.fr means dns@inist.fr.
  • ✓ Date-based serial #26
    The serial 2026042800 follows the YYYYMMDDnn convention (2026-04-28).

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

10 records at the apex

Found

Read from
193.54.109.101:53
TypeValueTTL
SOAns101.inist.fr. dns.inist.fr. 2026042800 21600 360 3456000 3003600
NSns4.cnrs.fr.3600
NSns101.inist.fr.3600
NSns102.inist.fr.3600
A193.54.110.703600
MX10 pxmxmail-1.inist.fr.600
MX20 pxmxmail-2.inist.fr.600
TXT"v=spf1 ip4:193.54.109.25 ip4:193.54.109.26 -all"3600
CAA0 issuewild "harica.gr"3600
CAA0 issue "harica.gr"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 10m, NS 1h.
  • ✓ 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.