u-cergy.fr

Checked 22 October 2026, 05:32 UTC · via 8.8.8.8
!Passed with warnings
26 passed 1 warning 0 failed 4 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
dns1.u-cergy.fr, dns2.u-cergy.fr, nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com
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

dns1.u-cergy.fr, dns2.u-cergy.fr, nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
dns1.u-cergy.fr, dns2.u-cergy.fr, nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com
NS in the zone
dns1.u-cergy.fr, dns2.u-cergy.fr, nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com
NameserverAddressesNetwork (AS)Glue
dns1.u-cergy.fr193.54.113.3AS2200 FR-RENATER - Renater, FR193.54.113.3
dns2.u-cergy.fr193.54.113.5AS2200 FR-RENATER - Renater, FR193.54.113.5
nsa.perf1.fr81.92.94.100 2a01:c8:100::100AS20756 NAMESHIELD - NAMESHIELD SAS, FR AS20756 NAMESHIELD - NAMESHIELD SAS, FR81.92.94.100 2a01:c8:100::100
nsb.perf1.com81.92.95.100 2a01:c8:101::100AS20756 NAMESHIELD - NAMESHIELD SAS, FR AS20756 NAMESHIELD - NAMESHIELD SAS, FR-
nsc.perf1.com152.89.172.100 2a09:35c0:102::100AS209510 NAMESHIELDGRP - NAMESHIELD SAS, FR AS209510 NAMESHIELDGRP - NAMESHIELD SAS, FR-

Checks

  • ✓ 5 nameservers #6
    Delegated to dns1.u-cergy.fr, dns2.u-cergy.fr, nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com.
  • ✓ 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: dns1.u-cergy.fr, dns2.u-cergy.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 4 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS20756 (NAMESHIELD - NAMESHIELD SAS, FR): 4 addresses; AS209510 (NAMESHIELDGRP - NAMESHIELD SAS, FR): 2 addresses; AS2200 (FR-RENATER - Renater, FR): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .fr.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: dns1.u-cergy.fr, dns2.u-cergy.fr.
    #13

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.u-cergy.fr 193.54.113.3NOERROR, 15 ms, authoritativenoyes / yesrefused-
dns2.u-cergy.fr 193.54.113.5NOERROR, 15 ms, authoritativenoyes / yesrefused-
nsa.perf1.fr 81.92.94.100NOERROR, 3 ms, authoritativenoyes / yesrefusedSecure
nsa.perf1.fr 2a01:c8:100::100NOERROR, 9 ms, authoritativenoyes / yesrefusedSecure
nsb.perf1.com 81.92.95.100NOERROR, 4 ms, authoritativenoyes / yesrefusedSecure
nsb.perf1.com 2a01:c8:101::100NOERROR, 9 ms, authoritativenoyes / yesrefusedSecure
nsc.perf1.com 152.89.172.100NOERROR, 4 ms, authoritativenoyes / yesrefusedSecure
nsc.perf1.com 2a09:35c0:102::100NOERROR, 4 ms, authoritativenoyes / yesrefusedSecure

Checks

  • ✓ All respond #14
    All 8 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: nsa.perf1.fr: "Secure"; nsb.perf1.com: "Secure"; nsc.perf1.com: "Secure".
    #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 8328 · primary dns1.u-cergy.fr

Found

Primary (MNAME)
dns1.u-cergy.fr
Contact (RNAME)
hostmaster.u-cergy.fr
Serial
8328
Refresh / retry
21600 s / 3600 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
dns1.u-cergy.fr (193.54.113.3)8328
dns2.u-cergy.fr (193.54.113.5)8328
nsa.perf1.fr (81.92.94.100)8328
nsa.perf1.fr (2a01:c8:100::100)8328
nsb.perf1.com (81.92.95.100)8328
nsb.perf1.com (2a01:c8:101::100)8328
nsc.perf1.com (152.89.172.100)8328
nsc.perf1.com (2a09:35c0:102::100)8328

Checks

  • ✓ Serial 8328 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 6h, retry 1h, expire 28d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.u-cergy.fr is one of the listed nameservers.
  • ✓ Contact hostmaster@u-cergy.fr #25
    The SOA RNAME hostmaster.u-cergy.fr means hostmaster@u-cergy.fr.
  • ✓ Counter serial #26
    The serial 8328 is a plain counter.

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

17 records at the apex

Found

Read from
193.54.113.3:53
TypeValueTTL
SOAdns1.u-cergy.fr. hostmaster.u-cergy.fr. 8328 21600 3600 2419200 9003600
NSdns1.u-cergy.fr.3600
NSnsb.perf1.com.3600
NSnsc.perf1.com.3600
NSnsa.perf1.fr.3600
NSdns2.u-cergy.fr.3600
A193.54.115.1923600
MX10 mxc.relay.renater.fr.3600
MX10 mxb.relay.renater.fr.3600
MX10 mxa.relay.renater.fr.3600
MX10 mxd.relay.renater.fr.3600
TXT"v=spf1 ip4:62.4.26.75 mx include:spf.partage.renater.fr ip4:193.54.113.15 ip4:193.54.113.16 ip4:188.165.191.90 ip4:141.94.231.251 a:mx1.cyu.fr a:mx2.cyu.fr ~all"3600
TXT"1ada248c1b584a4cab23f44e6bdb6c63"3600
TXT"HARICA-au1yyJlcBGCrnzxv5mC"3600
TXT"have-i-been-pwned-verification=a66da06b7b7074fb89be09ee7e74c8e4 "3600
CAA0 issue "harica.gr"3600
CAA0 issuewild "harica.gr"3600

Checks

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