ac-rennes.fr

Checked 22 October 2026, 01:22 UTC · via 8.8.8.8
✗Problems found
23 passed 3 warnings 1 failed 4 info

Registration

info

.fr country-code · GIP RENATER · expires 2027-10-21

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
GIP RENATER
Registered
21 October 1996
Last changed
21 October 2026
Expires
21 October 2027
Status
active, auto renew period
Registry nameservers
dnse1.ac-rennes.fr, dnse2.ac-rennes.fr, svc-dns-publique-01.ac-normandie.fr, svc-dns-publique-02.ac-normandie.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 2027-10-21 #3
    The registration is valid until 2027-10-21 (364 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active, auto renew period). 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

dnse1.ac-rennes.fr, dnse2.ac-rennes.fr, svc-dns-publique-01.ac-normandie.fr, svc-dns-publique-02.ac-normandie.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
dnse1.ac-rennes.fr, dnse2.ac-rennes.fr, svc-dns-publique-01.ac-normandie.fr, svc-dns-publique-02.ac-normandie.fr
NS in the zone
dnse1.ac-rennes.fr, dnse2.ac-rennes.fr, svc-dns-publique-01.ac-normandie.fr, svc-dns-publique-02.ac-normandie.fr
NameserverAddressesNetwork (AS)Glue
dnse1.ac-rennes.fr195.221.67.4AS2200 FR-RENATER - Renater, FR195.221.67.4
dnse2.ac-rennes.fr195.221.66.2AS2200 FR-RENATER - Renater, FR195.221.66.2
svc-dns-publique-01.ac-normandie.fr193.50.120.71AS2200 FR-RENATER - Renater, FR193.50.120.71
svc-dns-publique-02.ac-normandie.fr193.50.120.72AS2200 FR-RENATER - Renater, FR193.50.120.72

Checks

  • ✓ 4 nameservers #6
    Delegated to dnse1.ac-rennes.fr, dnse2.ac-rennes.fr, svc-dns-publique-01.ac-normandie.fr, svc-dns-publique-02.ac-normandie.fr.
  • ✓ 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: dnse1.ac-rennes.fr, dnse2.ac-rennes.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 3 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS2200 (FR-RENATER - Renater, FR): 4 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

fail

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dnse1.ac-rennes.fr 195.221.67.4NOERROR, 22 ms, authoritativenono / yesrefused[NONE]
dnse2.ac-rennes.fr 195.221.66.2NOERROR, 22 ms, authoritativenoyes / yesrefused[NONE]
svc-dns-publique-01.ac-normandie.fr 193.50.120.71NOERROR, 16 ms, authoritativenoyes / yesrefused9.18.33
svc-dns-publique-02.ac-normandie.fr 193.50.120.72NOERROR, 15 ms, authoritativenoyes / yesrefused9.18.33

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: svc-dns-publique-01.ac-normandie.fr: "9.18.33"; svc-dns-publique-02.ac-normandie.fr: "9.18.33". Hide or replace the version string.
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: dnse1.ac-rennes.fr (195.221.67.4): dial tcp 195.221.67.4:53: i/o timeout.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2026101201 · primary dnse1.ac-rennes.fr

Found

Primary (MNAME)
dnse1.ac-rennes.fr
Contact (RNAME)
postmaster.ac-rennes.fr
Serial
2026101201
Refresh / retry
43200 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
dnse1.ac-rennes.fr (195.221.67.4)2026101201
dnse2.ac-rennes.fr (195.221.66.2)2026101201
svc-dns-publique-01.ac-normandie.fr (193.50.120.71)2026101201
svc-dns-publique-02.ac-normandie.fr (193.50.120.72)2026101201

Checks

  • ✓ Serial 2026101201 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 2h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dnse1.ac-rennes.fr is one of the listed nameservers.
  • ✓ Contact postmaster@ac-rennes.fr #25
    The SOA RNAME postmaster.ac-rennes.fr means postmaster@ac-rennes.fr.
  • ✓ Date-based serial #26
    The serial 2026101201 follows the YYYYMMDDnn convention (2026-10-12).

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

12 records at the apex

Found

Read from
195.221.67.4:53
TypeValueTTL
SOAdnse1.ac-rennes.fr. postmaster.ac-rennes.fr. 2026101201 43200 7200 1209600 8640086400
NSsvc-dns-publique-01.ac-normandie.fr.86400
NSdnse1.ac-rennes.fr.86400
NSsvc-dns-publique-02.ac-normandie.fr.86400
NSdnse2.ac-rennes.fr.86400
A185.75.143.9386400
MX15 msg-b85.education.gouv.fr.86400
MX10 msg-a85.education.gouv.fr.86400
CAA0 issue "harica.gr"86400
CAA0 issue "sectigo.com"86400
CAA0 issuewild "harica.gr"86400
CAA0 issuewild "sectigo.com"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: harica.gr, sectigo.com.