u-paris.fr

Checked 22 October 2026, 05:32 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 warnings 0 failed 7 info

Registration

info

.fr country-code · unyc · expires 2027-05-20

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
unyc
Registered
12 May 2016
Last changed
23 December 2025
Expires
20 May 2027
Status
active
Registry nameservers
delta.univ-paris5.fr, korolev.univ-paris7.fr, potemkin.univ-paris7.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 2027-05-20 #3
    The registration is valid until 2027-05-20 (210 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

delta.univ-paris5.fr, korolev.univ-paris7.fr, potemkin.univ-paris7.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
delta.univ-paris5.fr, korolev.univ-paris7.fr, potemkin.univ-paris7.fr
NS in the zone
delta.univ-paris5.fr, korolev.univ-paris7.fr, potemkin.univ-paris7.fr
NameserverAddressesNetwork (AS)Glue
delta.univ-paris5.fr193.51.86.4AS2200 FR-RENATER - Renater, FR193.51.86.4
korolev.univ-paris7.fr194.254.61.138 2001:660:3301:8000::1:2AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR194.254.61.138 2001:660:3301:8000::1:2
potemkin.univ-paris7.fr194.254.61.141 2001:660:3301:8000::1:1AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR194.254.61.141 2001:660:3301:8000::1:1

Checks

  • ✓ 3 nameservers #6
    Delegated to delta.univ-paris5.fr, korolev.univ-paris7.fr, potemkin.univ-paris7.fr.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • i
    One address family in one network
    all IPv6 addresses are in 2001:660:3301::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS2200 (FR-RENATER - Renater, FR): 5 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: delta.univ-paris5.fr.
    #13

Nameservers

warn

5 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
delta.univ-paris5.fr 193.51.86.4NOERROR, 14 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u1-Debian
korolev.univ-paris7.fr 194.254.61.138NOERROR, 14 ms, authoritativenoyes / yesrefused9.8.2rc1-RedHat-9.8.2-0.68.rc1.el6_10.8
korolev.univ-paris7.fr 2001:660:3301:8000::1:2NOERROR, 14 ms, authoritativenoyes / yesrefused9.8.2rc1-RedHat-9.8.2-0.68.rc1.el6_10.8
potemkin.univ-paris7.fr 194.254.61.141NOERROR, 14 ms, authoritativenoyes / yesrefused9.8.2rc1-RedHat-9.8.2-0.68.rc1.el6_10.8
potemkin.univ-paris7.fr 2001:660:3301:8000::1:1NOERROR, 14 ms, authoritativenoyes / yesrefused9.8.2rc1-RedHat-9.8.2-0.68.rc1.el6_10.8

Checks

  • ✓ All respond #14
    All 5 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: delta.univ-paris5.fr: "9.18.49-1~deb12u1-Debian"; korolev.univ-paris7.fr: "9.8.2rc1-RedHat-9.8.2-0.68.rc1.el6_10.8"; potemkin.univ-paris7.fr: "9.8.2rc1-RedHat-9.8.2-0.68.rc1.el6_10.8". Hide or replace the version string.
    #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 2026100801 · primary potemkin.univ-paris7.fr

Found

Primary (MNAME)
potemkin.univ-paris7.fr
Contact (RNAME)
dnsmaster.uspc.fr
Serial
2026100801
Refresh / retry
21600 s / 3600 s
Expire
2592000 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
delta.univ-paris5.fr (193.51.86.4)2026100801
korolev.univ-paris7.fr (194.254.61.138)2026100801
korolev.univ-paris7.fr (2001:660:3301:8000::1:2)2026100801
potemkin.univ-paris7.fr (194.254.61.141)2026100801
potemkin.univ-paris7.fr (2001:660:3301:8000::1:1)2026100801

Checks

  • ✓ Serial 2026100801 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 6h, retry 1h, expire 30d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver potemkin.univ-paris7.fr is one of the listed nameservers.
  • ✓ Contact dnsmaster@uspc.fr #25
    The SOA RNAME dnsmaster.uspc.fr means dnsmaster@uspc.fr.
  • ✓ Date-based serial #26
    The serial 2026100801 follows the YYYYMMDDnn convention (2026-10-08).

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

15 records at the apex

Found

Read from
193.51.86.4:53
TypeValueTTL
SOApotemkin.univ-paris7.fr. dnsmaster.uspc.fr. 2026100801 21600 3600 2592000 8640086400
NSkorolev.univ-paris7.fr.86400
NSdelta.univ-paris5.fr.86400
NSpotemkin.univ-paris7.fr.86400
A195.220.128.193300
MX10 mx01.cloud.vadesecure.com.300
MX10 mx04.cloud.vadesecure.com.300
MX10 mx03.cloud.vadesecure.com.300
MX10 mx02.cloud.vadesecure.com.300
TXT"druide-validation-domaine=3e08e6cfe7ca883bf5c60dbb41677f14"300
TXT"00D0O000000s1Nk=1TBaT00000002eX"300
TXT"v=spf1 ip4:195.220.128.192/27 ip4:212.199.136.212 ip4:91.199.29.0/24 ip4:88.202.222.0/24 ip4:130.117.78.50/32 ip4:195.82.108.0/24 ip4:134.90.136.30 include:_spf.univ-paris-diderot.fr include:_spf.parisdescartes.fr ?all"300
TXT"MS=ms30365986"300
TXT"00Dbg000005G2Sy=1TBbg000000071V"300
TXT"google-site-verification=slF3nHJwpSH5d8laQhZpNT7eM5xA2GQHYtKLbwKE-50"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, 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