Domain report: ac-caen.fr

Registration

info

.fr country-code · GIP RENATER · expires 2027-05-06

Found

TLD: .fr (country-code)
ICANN policies apply: no
Registrar: GIP RENATER
Registered: 30 September 1997
Last changed: 30 June 2026
Expires: 6 May 2027
Status: active
Registry nameservers: dns1.ac-lille.fr, dnse1.ac-rennes.fr, ns0.ac-grenoble.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 2027-05-06 #3

The registration is valid until 2027-05-06 (196 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

dns1.ac-lille.fr, dnse1.ac-rennes.fr, ns0.ac-grenoble.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: dns1.ac-lille.fr, dnse1.ac-rennes.fr, ns0.ac-grenoble.fr, svc-dns-publique-01.ac-normandie.fr, svc-dns-publique-02.ac-normandie.fr
NS in the zone: dns1.ac-lille.fr, dnse1.ac-rennes.fr, ns0.ac-grenoble.fr, svc-dns-publique-01.ac-normandie.fr, svc-dns-publique-02.ac-normandie.fr

Nameserver	Addresses	Network (AS)	Glue
dns1.ac-lille.fr	194.199.79.6	AS2200 FR-RENATER - Renater, FR	194.199.79.6
dnse1.ac-rennes.fr	195.221.67.4	AS2200 FR-RENATER - Renater, FR	195.221.67.4
ns0.ac-grenoble.fr	193.54.149.20	AS2200 FR-RENATER - Renater, FR	193.54.149.20
svc-dns-publique-01.ac-normandie.fr	193.50.120.71	AS2200 FR-RENATER - Renater, FR	193.50.120.71
svc-dns-publique-02.ac-normandie.fr	193.50.120.72	AS2200 FR-RENATER - Renater, FR	193.50.120.72

Checks

✓ 5 nameservers #6

Delegated to dns1.ac-lille.fr, dnse1.ac-rennes.fr, ns0.ac-grenoble.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.
✓ 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.
✓ Nameservers in different networks #10

The nameservers are spread over 4 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): 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
!

No IPv6

None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.

#13

Nameservers

fail

5 of 5 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns1.ac-lille.fr 194.199.79.6	NOERROR, 19 ms, authoritative	no	no / yes	refused	dns
dnse1.ac-rennes.fr 195.221.67.4	NOERROR, 23 ms, authoritative	no	no / yes	refused	[NONE]
ns0.ac-grenoble.fr 193.54.149.20	NOERROR, 30 ms, authoritative	no	yes / yes	refused	9.20.15-1~deb13u1-Debian
svc-dns-publique-01.ac-normandie.fr 193.50.120.71	NOERROR, 15 ms, authoritative	no	yes / yes	refused	9.18.33
svc-dns-publique-02.ac-normandie.fr 193.50.120.72	NOERROR, 15 ms, authoritative	no	yes / yes	refused	9.18.33

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: ns0.ac-grenoble.fr: "9.20.15-1~deb13u1-Debian"; 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: dns1.ac-lille.fr (194.199.79.6): dial tcp 194.199.79.6:53: i/o timeout; 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

info

serial 2026041501 · primary data-dns-maitre-01.in.ac-normandie.fr

Found

Primary (MNAME): data-dns-maitre-01.in.ac-normandie.fr
Contact (RNAME): reseaux.ac-normandie.fr
Serial: 2026041501
Refresh / retry: 14400 s / 3600 s
Expire: 604800 s
Negative TTL: 600 s

Serial per nameserver

Nameserver	Serial
dns1.ac-lille.fr (194.199.79.6)	2026041501
dnse1.ac-rennes.fr (195.221.67.4)	2026041501
ns0.ac-grenoble.fr (193.54.149.20)	2026041501
svc-dns-publique-01.ac-normandie.fr (193.50.120.71)	2026041501
svc-dns-publique-02.ac-normandie.fr (193.50.120.72)	2026041501

Checks

✓ Serial 2026041501 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 4h, retry 1h, expire 7d, negative TTL 10m.
i

Hidden master (not resolvable)

The primary nameserver data-dns-maitre-01.in.ac-normandie.fr is not listed as a nameserver and does not resolve publicly: a hidden master, or a placeholder name. Some tools (e.g. dynamic updates) use MNAME to find the primary.

#24
✓ Contact reseaux@ac-normandie.fr #25

The SOA RNAME reseaux.ac-normandie.fr means reseaux@ac-normandie.fr.
✓ Date-based serial #26

The serial 2026041501 follows the YYYYMMDDnn convention (2026-04-15).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC
Signatures valid until: 13 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
14089	RSASHA256 (8)	SHA256 0591776150C6AFC0…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
14089	KSK (257)	RSASHA256 (8)
50196	ZSK (256)	RSASHA256 (8)

Checks

✓ Signed and validated #27

The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
✓ DS matches a key #28

The DS record at the parent matches a key in the zone: key tag 14089 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-13 #30

The earliest DNSKEY/SOA signature expires at 2026-11-13 06:16 UTC.
i

NSEC

The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.

#31

Records

pass

14 records at the apex

Found

Read from: 194.199.79.6:53

Type	Value	TTL
SOA	data-dns-maitre-01.in.ac-normandie.fr. reseaux.ac-normandie.fr. 2026041501 14400 3600 604800 600	3600
NS	ns0.ac-grenoble.fr.	3600
NS	dnse1.ac-rennes.fr.	3600
NS	svc-dns-publique-01.ac-normandie.fr.	3600
NS	dns1.ac-lille.fr.	3600
NS	svc-dns-publique-02.ac-normandie.fr.	3600
A	193.50.120.117	3600
MX	10 msg-b85.education.gouv.fr.	3600
MX	10 msg-a85.education.gouv.fr.	3600
TXT	"v=spf1 ip4:193.50.120.13 ip4:193.50.120.14/31 ip4:193.50.120.16/31 ip4:172.26.67.84/31 ip4:193.51.147.21/28 ip4:194.254.206.80/29 ip4:193.54.151.80/29 ~all"	3600
TXT	"HARICA-UR0HwbVkaoPjaR4mO1p"	3600
CAA	0 issue "harica.gr"	3600
CAA	0 iodef "mailto:reseaux@ac-normandie.fr"	3600
CAA	0 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.