cnrs-mrs.fr

Checked 22 October 2026, 02:22 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 6 info

Registration

info

.fr country-code · GIP RENATER · expires 2027-04-17

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
GIP RENATER
Registered
17 April 1996
Last changed
31 May 2026
Expires
17 April 2027
Status
active
Registry nameservers
ns1.univmed.fr, skylab.cnrs-mrs.fr, tressan.cnrs-mrs.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 2027-04-17 #3
    The registration is valid until 2027-04-17 (177 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.univmed.fr, skylab.cnrs-mrs.fr, tressan.cnrs-mrs.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
ns1.univmed.fr, skylab.cnrs-mrs.fr, tressan.cnrs-mrs.fr
NS in the zone
ns1.univmed.fr, skylab.cnrs-mrs.fr, tressan.cnrs-mrs.fr
NameserverAddressesNetwork (AS)Glue
ns1.univmed.fr139.124.1.1 2001:660:5402:801::1AS2457 FR-RAIMU-2 - Renater, EU AS2200 FR-RENATER - Renater, FR139.124.1.1 2001:660:5402:801::1
skylab.cnrs-mrs.fr195.221.165.8AS2200 FR-RENATER - Renater, FR194.57.136.195
tressan.cnrs-mrs.fr194.57.126.30AS2200 FR-RENATER - Renater, FR194.57.126.30

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.univmed.fr, skylab.cnrs-mrs.fr, tressan.cnrs-mrs.fr.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: skylab.cnrs-mrs.fr (glue 194.57.136.195, zone 195.221.165.8). Update the glue at your registrar.
    #8
  • ✓ 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 1 IPv6 /48.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS2200 (FR-RENATER - Renater, FR): 3 addresses; AS2457 (FR-RAIMU-2 - Renater, EU): 1 address.
  • 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: skylab.cnrs-mrs.fr, tressan.cnrs-mrs.fr.
    #13

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.univmed.fr 139.124.1.1NOERROR, 27 ms, authoritativenoyes / yesrefusednot disclosed
ns1.univmed.fr 2001:660:5402:801::1NOERROR, 30 ms, authoritativenoyes / yesrefusednot disclosed
skylab.cnrs-mrs.fr 195.221.165.8NOERROR, 22 ms, authoritativenoyes / yesrefused-
tressan.cnrs-mrs.fr 194.57.126.30NOERROR, 25 ms, authoritativenoyes / yesrefused-

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: ns1.univmed.fr: "not disclosed".
    #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 2026082001 · primary tressan.cnrs-mrs.fr

Found

Primary (MNAME)
tressan.cnrs-mrs.fr
Contact (RNAME)
dnsmaster.cnrs-mrs.fr
Serial
2026082001
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
7200 s

Serial per nameserver

NameserverSerial
ns1.univmed.fr (139.124.1.1)2026082001
ns1.univmed.fr (2001:660:5402:801::1)2026082001
skylab.cnrs-mrs.fr (195.221.165.8)2026082001
tressan.cnrs-mrs.fr (194.57.126.30)2026082001

Checks

  • ✓ Serial 2026082001 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 2h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver tressan.cnrs-mrs.fr is one of the listed nameservers.
  • ✓ Contact dnsmaster@cnrs-mrs.fr #25
    The SOA RNAME dnsmaster.cnrs-mrs.fr means dnsmaster@cnrs-mrs.fr.
  • ✓ Date-based serial #26
    The serial 2026082001 follows the YYYYMMDDnn convention (2026-08-20).

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
139.124.1.1:53
TypeValueTTL
SOAtressan.cnrs-mrs.fr. dnsmaster.cnrs-mrs.fr. 2026082001 28800 7200 604800 720086400
NSskylab.cnrs-mrs.fr.86400
NSns1.univmed.fr.86400
NStressan.cnrs-mrs.fr.86400
MX10 12mail.dr12.cnrs.fr.86400
TXT"v=spf1 mx a ip4:194.57.126.215/32 ip4:195.221.165.32/32 ip4:195.221.165.38/32 ~all"86400

Checks

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