chu-rouen.fr

Checked 22 October 2026, 02:16 UTC · via 8.8.8.8
!Passed with warnings
23 passed 1 warning 0 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
chudns.chu-rouen.fr, ns.crihan.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

chudns.chu-rouen.fr, ns.crihan.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
chudns.chu-rouen.fr, ns.crihan.fr
NS in the zone
chudns.chu-rouen.fr, ns.crihan.fr
NameserverAddressesNetwork (AS)Glue
chudns.chu-rouen.fr194.57.9.140AS2200 FR-RENATER - Renater, FR194.57.9.140
ns.crihan.fr195.221.20.10 2001:660:7401:201::10AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR195.221.20.10 2001:660:7401:201::10

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: chudns.chu-rouen.fr, ns.crihan.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: chudns.chu-rouen.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 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): 3 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: chudns.chu-rouen.fr.
    #13

Nameservers

pass

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
chudns.chu-rouen.fr 194.57.9.140NOERROR, 16 ms, authoritativenoyes / yesrefused-
ns.crihan.fr 195.221.20.10NOERROR, 20 ms, authoritativenoyes / yesrefused-
ns.crihan.fr 2001:660:7401:201::10NOERROR, 17 ms, authoritativenoyes / yesrefused-

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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 2026092903 · primary chudns.chu-rouen.fr

Found

Primary (MNAME)
chudns.chu-rouen.fr
Contact (RNAME)
postmaster.chu-rouen.fr
Serial
2026092903
Refresh / retry
14400 s / 3600 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
chudns.chu-rouen.fr (194.57.9.140)2026092903
ns.crihan.fr (195.221.20.10)2026092903
ns.crihan.fr (2001:660:7401:201::10)2026092903

Checks

  • ✓ Serial 2026092903 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver chudns.chu-rouen.fr is one of the listed nameservers.
  • ✓ Contact postmaster@chu-rouen.fr #25
    The SOA RNAME postmaster.chu-rouen.fr means postmaster@chu-rouen.fr.
  • ✓ Date-based serial #26
    The serial 2026092903 follows the YYYYMMDDnn convention (2026-09-29).

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

5 records at the apex

Found

Read from
194.57.9.140:53
TypeValueTTL
SOAchudns.chu-rouen.fr. postmaster.chu-rouen.fr. 2026092903 14400 3600 1209600 86400259200
NSchudns.chu-rouen.fr.259200
NSns.crihan.fr.259200
A185.66.232.180300
MX10 expert.chu-rouen.fr.259200

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 3d, NS 3d. The NS TTL at the parent is 1h and in the zone 3d; 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