Domain report: utc.fr

Registration

info

.fr country-code · GIP RENATER · expires 2027-02-20

Found

TLD: .fr (country-code)
ICANN policies apply: no
Registrar: GIP RENATER
Registered: 20 February 1996
Last changed: 31 March 2026
Expires: 20 February 2027
Status: active
Registry nameservers: dns1.utc.fr, dns2.utc.fr, ns.crihan.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 2027-02-20 #3

The registration is valid until 2027-02-20 (121 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.utc.fr, dns2.utc.fr, ns.crihan.fr

Found

Parent zone: fr
Delegation from: d.nic.fr (194.0.9.1)
NS at the parent: dns1.utc.fr, dns2.utc.fr, ns.crihan.fr
NS in the zone: dns1.utc.fr, dns2.utc.fr, ns.crihan.fr

Nameserver	Addresses	Network (AS)	Glue
dns1.utc.fr	195.83.155.16 2001:660:4201:1::2	AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR	195.83.155.16 2001:660:4201:1::2
dns2.utc.fr	195.83.155.15 2001:660:4201:1::3	AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR	195.83.155.15 2001:660:4201:1::3
ns.crihan.fr	195.221.20.10 2001:660:7401:201::10	AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR	195.221.20.10 2001:660:7401:201::10

Checks

✓ 3 nameservers #6

Delegated to dns1.utc.fr, dns2.utc.fr, ns.crihan.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: dns1.utc.fr, dns2.utc.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 2 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS2200 (FR-RENATER - Renater, FR): 6 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
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

info

6 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns1.utc.fr 195.83.155.16	NOERROR, 21 ms, authoritative	no	yes / yes	refused	UTC DNS Server
dns1.utc.fr 2001:660:4201:1::2	NOERROR, 15 ms, authoritative	no	yes / yes	refused	UTC DNS Server
dns2.utc.fr 195.83.155.15	NOERROR, 22 ms, authoritative	no	yes / yes	refused	UTC DNS Server
dns2.utc.fr 2001:660:4201:1::3	NOERROR, 15 ms, authoritative	no	yes / yes	refused	UTC DNS Server
ns.crihan.fr 195.221.20.10	NOERROR, 19 ms, authoritative	no	yes / yes	refused	-
ns.crihan.fr 2001:660:7401:201::10	NOERROR, 16 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 6 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: dns1.utc.fr: "UTC DNS Server"; dns2.utc.fr: "UTC DNS Server".

#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 2026102216 · primary dns1.utc.fr

Found

Primary (MNAME): dns1.utc.fr
Contact (RNAME): postmaster.utc.fr
Serial: 2026102216
Refresh / retry: 1800 s / 900 s
Expire: 2592000 s
Negative TTL: 1800 s

Serial per nameserver

Nameserver	Serial
dns1.utc.fr (195.83.155.16)	2026102216
dns1.utc.fr (2001:660:4201:1::2)	2026102216
dns2.utc.fr (195.83.155.15)	2026102216
dns2.utc.fr (2001:660:4201:1::3)	2026102216
ns.crihan.fr (195.221.20.10)	2026102216
ns.crihan.fr (2001:660:7401:201::10)	2026102216

Checks

✓ Serial 2026102216 everywhere #22

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

SOA refresh 30m, retry 15m, expire 30d, negative TTL 30m.
✓ Primary is a public nameserver #24

The primary nameserver dns1.utc.fr is one of the listed nameservers.
✓ Contact postmaster@utc.fr #25

The SOA RNAME postmaster.utc.fr means postmaster@utc.fr.
✓ Date-based serial #26

The serial 2026102216 follows the YYYYMMDDnn convention (2026-10-22).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 100 iterations, 16-byte salt
Signatures valid until: 21 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
8491	RSASHA256 (8)	SHA256 86A171C917B72A38…	yes
55564	RSASHA256 (8)	SHA256 0F92106251B6560B…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
55564	KSK (257)	RSASHA256 (8)
64623	ZSK (256)	RSASHA256 (8)
61128	ZSK (256)	RSASHA256 (8)
8491	KSK (257)	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 8491 (SHA256), key tag 55564 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-21 #30

The earliest DNSKEY/SOA signature expires at 2026-11-21 04:31 UTC.
!

NSEC3 with extra iterations or salt

NSEC3 uses 100 iterations and a 16-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.

#31

Records

pass

20 records at the apex

Found

Read from: 195.83.155.16:53

Type	Value	TTL
SOA	dns1.utc.fr. postmaster.utc.fr. 2026102216 1800 900 2592000 1800	1800
NS	dns1.utc.fr.	1800
NS	dns2.utc.fr.	1800
NS	ns.crihan.fr.	1800
A	195.83.155.24	14400
MX	20 vade-mx-eu-fallback01.hornetsecurity.com.	14400
MX	10 vade-mx-fr01.hornetsecurity.com.	14400
MX	10 vade-mx-fr02.hornetsecurity.com.	14400
MX	20 vade-mx-eu-fallback02.hornetsecurity.com.	14400
TXT	"google-site-verification=RvyUpogUrSlOgrvQ2F3poHAAGkeW5ifQtiEqMl5n0z0"	86400
TXT	"ZOOM_verify_7MH0bHBzSa6o2driCqTr_A"	86400
TXT	"HARICA-qaVs1SmNjKlu6OWtx1P"	86400
TXT	"MS=B30D45131960A37F0DB7AFAB6295DA615AD64AC4"	86400
TXT	"google-site-verification=Ip7V4wUxybwkMNcjGMOOxoAyq34EduQpzb22HLnd4tY"	86400
TXT	"autodesk-domain-verification=qWnWkH8mSOvhzU_urSix"	86400
TXT	"v=spf1 include:spf.utc.fr include:spf.mailjet.com include:spf.hornetsecurity.com -all"	86400
CAA	0 issue "harica.gr"	1800
CAA	0 issue "letsencrypt.org"	1800
CAA	0 issue "sectigo.com"	1800
CAA	0 issue "digicert.com"	1800

Checks

✓ TTLs within range #32

TTLs: A 4h, MX 4h, NS 30m. The NS TTL at the parent is 1h and in the zone 30m; 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, letsencrypt.org, sectigo.com, digicert.com.