Domain report: univ-tours.fr

Registration

info

.fr country-code · GIP RENATER · expires 2026-12-31

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.

info

admin.cnrs-orleans.fr, ronsar.univ-tours.fr

Nameserver	Addresses	Network (AS)	Glue
admin.cnrs-orleans.fr	163.9.1.2 2001:660:6404:31::20	AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR	163.9.1.2 2001:660:6404:31::20
ronsar.univ-tours.fr	193.52.209.2	AS2200 FR-RENATER - Renater, FR	193.52.209.2

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: admin.cnrs-orleans.fr, ronsar.univ-tours.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: ronsar.univ-tours.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 2 IPv4 /24s and 1 IPv6 /48.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS2200 (FR-RENATER - Renater, FR): 3 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: ronsar.univ-tours.fr.

#13

fail

2 of 3 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
admin.cnrs-orleans.fr 163.9.1.2	NOERROR, 19 ms, authoritative	no	yes / yes	refused	-
admin.cnrs-orleans.fr 2001:660:6404:31::20	no response	no	no / no	-	-
ronsar.univ-tours.fr 193.52.209.2	NOERROR, 18 ms, authoritative	no	yes / yes	refused	9.16.50-Debian

✗

Nameservers not responding

These addresses did not answer, so resolvers waste time on timeouts: admin.cnrs-orleans.fr (2001:660:6404:31::20): read udp [2a01:4f8:1c1c:eebf::1]:49645->[2001:660:6404:31::20]:53: i/o timeout.

#14
✓ 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: ronsar.univ-tours.fr: "9.16.50-Debian". 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.

warn

serial 2026102101 · primary ronsar.univ-tours.fr

Nameserver	Serial
admin.cnrs-orleans.fr (163.9.1.2)	2026102101
ronsar.univ-tours.fr (193.52.209.2)	2026102101

✓ Serial 2026102101 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 6h, retry 2h, expire 7d, negative TTL 2d.

#23
✓ Primary is a public nameserver #24

The primary nameserver ronsar.univ-tours.fr is one of the listed nameservers.
✓ Contact hostmaster@univ-tours.fr #25

The SOA RNAME hostmaster.univ-tours.fr means hostmaster@univ-tours.fr.
✓ Date-based serial #26

The serial 2026102101 follows the YYYYMMDDnn convention (2026-10-21).

warn

Not signed

pass

19 records at the apex

Type	Value	TTL
SOA	ronsar.univ-tours.fr. hostmaster.univ-tours.fr. 2026102101 21600 7200 604800 172800	21600
NS	ronsar.univ-tours.fr.	21600
NS	admin.cnrs-orleans.fr.	21600
A	193.52.209.50	21600
MX	50 mx2.relay.renater.fr.	36000
MX	50 mx1.relay.renater.fr.	36000
TXT	"MS=8113394762420D410920A8FBDCB8093B6EE106ED"	21600
TXT	"mistral-domain-verification=f9357b191a1d649abc7d984be07ecb486d32a7d6"	21600
TXT	"HARICA-XPuRQniziPdPPD79tly"	21600
TXT	"v=spf1 mx ip4:194.214.200.0/23 ip4:193.52.209.0/24 ip4:193.52.214.160/27 " "include:spf.relay.renater.fr include:spf.protection.outlook.com " "ip4:91.103.234.96/27 ip4:91.103.237.96/27 ip4:83.206.237.128/26 " "ip4:213.41.75.32/32 ip4:213.41.75.36/32 ip4:92.243.17.48 ip4:77.237.55.139 -all"	21600
TXT	"apple-domain-verification=xHfI0uHhYBgiwrG5"	21600
TXT	"google-site-verification=XTgQbf2m3yG__dtXbaVlRjYt4kRqrXZ3wuI6J8Cyn6g"	21600
CAA	0 issue "harica.gr"	21600
CAA	0 issue "amazon.com"	21600
CAA	0 issue "amazontrust.com"	21600
CAA	0 issue "amazonaws.com"	21600
CAA	0 issue "awstrust.com"	21600
CAA	0 issuewild "harica.gr"	21600
CAA	0 issue "letsencrypt.org"	21600

✓ TTLs within range #32

TTLs: A 6h, MX 10h, NS 6h. The NS TTL at the parent is 1h and in the zone 6h; 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, amazon.com, amazontrust.com, amazonaws.com, awstrust.com, letsencrypt.org.