chu-caen.fr

Checked 22 October 2026, 02:16 UTC · via 8.8.8.8
!Passed with warnings
21 passed 4 warnings 0 failed 6 info

Registration

info

.fr country-code · GIP RENATER · expires 2026-12-19

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
GIP RENATER
Registered
19 December 1995
Last changed
19 February 2026
Expires
19 December 2026
Status
active
Registry nameservers
dnspub-srv1.chu-caen.fr, dnspub-srv2.chu-caen.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 2026-12-19 #3
    The registration is valid until 2026-12-19 (58 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

dnspub-srv1.chu-caen.fr, dnspub-srv2.chu-caen.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
dnspub-srv1.chu-caen.fr, dnspub-srv2.chu-caen.fr
NS in the zone
dnspub-srv1.chu-caen.fr, dnspub-srv2.chu-caen.fr
NameserverAddressesNetwork (AS)Glue
dnspub-srv1.chu-caen.fr193.49.47.250AS2200 FR-RENATER - Renater, FR193.49.47.250
dnspub-srv2.chu-caen.fr193.49.47.11AS2200 FR-RENATER - Renater, FR193.49.47.11

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dnspub-srv1.chu-caen.fr, dnspub-srv2.chu-caen.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: dnspub-srv1.chu-caen.fr, dnspub-srv2.chu-caen.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 193.49.47.0/24. 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

pass

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dnspub-srv1.chu-caen.fr 193.49.47.250NOERROR, 19 ms, authoritativenoyes / yesrefused-
dnspub-srv2.chu-caen.fr 193.49.47.11NOERROR, 18 ms, authoritativenoyes / yesrefused-

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.
  • ✓ 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

warn

serial 2016113726 · primary dnspub-srv1.chu-caen.fr

Found

Primary (MNAME)
dnspub-srv1.chu-caen.fr
Contact (RNAME)
postmaster.chu-caen.fr
Serial
2016113726
Refresh / retry
3600 s / 900 s
Expire
604800 s
Negative TTL
172800 s

Serial per nameserver

NameserverSerial
dnspub-srv1.chu-caen.fr (193.49.47.250)2016113726
dnspub-srv2.chu-caen.fr (193.49.47.11)2016113726

Checks

  • ✓ Serial 2016113726 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 2d is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1h, retry 15m, expire 7d, negative TTL 2d.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver dnspub-srv1.chu-caen.fr is one of the listed nameservers.
  • ✓ Contact postmaster@chu-caen.fr #25
    The SOA RNAME postmaster.chu-caen.fr means postmaster@chu-caen.fr.
  • ✓ Timestamp serial #26
    The serial 2016113726 is a Unix timestamp (2033-11-20 15:35 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

info

13 records at the apex

Found

Read from
193.49.47.250:53
TypeValueTTL
SOAdnspub-srv1.chu-caen.fr. postmaster.chu-caen.fr. 2016113726 3600 900 604800 172800172800
NSdnspub-srv2.chu-caen.fr.172800
NSdnspub-srv1.chu-caen.fr.172800
MX20 passerelle2.chu-caen.fr.172800
MX20 passerelle.chu-caen.fr.172800
TXT"google-site-verification=i_pbHSlEoOj4VLS1vXwQXTGBGpdCMK9G-FaOb9XdDqo"3600
TXT"2XSR6N7YB9I54JHZFADL7WFBS006GX82T02UH823"3600
TXT"T4m-a4V-69g"3600
TXT"_agtnm4vw7d9nzj3hkrt0dppn0oiwtrl"3600
TXT"apple-domain-verification=9laNUjC00dKZYpQO"3600
TXT"MS=75B7C263DFDBC7ADFA73AC0B65497A5E2A363EA6"3600
TXT"v=spf1 ip4:193.49.47.250 ip4:193.49.47.249 ip4:34.163.176.117 ip4:34.155.127.209 ip4:84.37.105.61 include:spf.mandrillapp.com -all"3600
TXT"notion-domain-verification=yYyMGXYjLcMtzEBJcsZmFkwHPExTKHVOHjCV9hxHSEE"3600

Checks

  • ✓ TTLs within range #32
    TTLs: MX 2d, NS 2d. The NS TTL at the parent is 1h and in the zone 2d; 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