cnrs-orleans.fr

Checked 22 October 2026, 02:22 UTC · via 8.8.8.8
✗Problems found
21 passed 2 warnings 1 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
admin.cnrs-orleans.fr, adminette.cnrs-orleans.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 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

info

admin.cnrs-orleans.fr, adminette.cnrs-orleans.fr, ns4.cnrs.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
admin.cnrs-orleans.fr, adminette.cnrs-orleans.fr, ns4.cnrs.fr
NS in the zone
admin.cnrs-orleans.fr, adminette.cnrs-orleans.fr, ns4.cnrs.fr
NameserverAddressesNetwork (AS)Glue
admin.cnrs-orleans.fr163.9.1.2 2001:660:6404:31::20AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR163.9.1.2 2001:660:6404:31::20
adminette.cnrs-orleans.fr163.9.67.2 2001:660:6404:32::20AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR163.9.67.2 2001:660:6404:32::20
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 admin.cnrs-orleans.fr, adminette.cnrs-orleans.fr, ns4.cnrs.fr.
  • ✓ 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: admin.cnrs-orleans.fr, adminette.cnrs-orleans.fr.
  • ✓ 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 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS2200 (FR-RENATER - Renater, FR): 6 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

fail

4 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
admin.cnrs-orleans.fr 163.9.1.2NOERROR, 16 ms, authoritativenoyes / yesrefused-
admin.cnrs-orleans.fr 2001:660:6404:31::20no responsenono / no--
adminette.cnrs-orleans.fr 163.9.67.2NOERROR, 18 ms, authoritativenoyes / yesrefused-
adminette.cnrs-orleans.fr 2001:660:6404:32::20no responsenono / no--
ns4.cnrs.fr 195.220.197.11NOERROR, 16 ms, authoritativenoyes / yesrefusedSECRET
ns4.cnrs.fr 2001:660:500a:2210::11NOERROR, 18 ms, authoritativenoyes / yesrefusedSECRET

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: admin.cnrs-orleans.fr (2001:660:6404:31::20): read udp [2a01:4f8:1c1c:eebf::1]:41247->[2001:660:6404:31::20]:53: i/o timeout; adminette.cnrs-orleans.fr (2001:660:6404:32::20): read udp [2a01:4f8:1c1c:eebf::1]:38111->[2001:660:6404:32::20]:53: i/o timeout.
    #14
  • ✓ 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: 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

warn

serial 2026101600 · primary netmagis.cnrs-orleans.fr

Found

Primary (MNAME)
netmagis.cnrs-orleans.fr
Contact (RNAME)
postmaster.cnrs-orleans.fr
Serial
2026101600
Refresh / retry
7200 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
admin.cnrs-orleans.fr (163.9.1.2)2026101600
adminette.cnrs-orleans.fr (163.9.67.2)2026101600
ns4.cnrs.fr (195.220.197.11)2026101600
ns4.cnrs.fr (2001:660:500a:2210::11)2026101600

Checks

  • ✓ Serial 2026101600 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 2h should be shorter than refresh 2h. Current values: refresh 2h, retry 2h, expire 7d, negative TTL 1d.
    #23
  • i
    Hidden master
    The primary nameserver netmagis.cnrs-orleans.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 postmaster@cnrs-orleans.fr #25
    The SOA RNAME postmaster.cnrs-orleans.fr means postmaster@cnrs-orleans.fr.
  • ✓ Date-based serial #26
    The serial 2026101600 follows the YYYYMMDDnn convention (2026-10-16).

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

6 records at the apex

Found

Read from
163.9.1.2:53
TypeValueTTL
SOAnetmagis.cnrs-orleans.fr. postmaster.cnrs-orleans.fr. 2026101600 7200 7200 604800 8640014400
NSadmin.cnrs-orleans.fr.14400
NSns4.cnrs.fr.14400
NSadminette.cnrs-orleans.fr.14400
MX0 mailgw.cnrs-orleans.fr.14400
TXT"v=spf1 ip4:163.9.1.10 ip4:163.9.67.132 ip4:163.9.67.135 ip4:163.9.67.133 ip4:163.9.67.24 ip4:163.9.67.60 ip4:163.9.1.22 mx a:dr8.cnrs.fr ~all"14400

Checks

  • ✓ TTLs within range #32
    TTLs: MX 4h, NS 4h. The NS TTL at the parent is 1h and in the zone 4h; 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