Domain report: ensma.fr

Registration

info

.fr country-code · GIP RENATER · expires 2027-07-09

Found

TLD: .fr (country-code)
ICANN policies apply: no
Registrar: GIP RENATER
Registered: 9 July 1997
Last changed: 31 August 2026
Expires: 9 July 2027
Status: active
Registry nameservers: ns1.ensma.fr, ns2.ensma.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 2027-07-09 #3

The registration is valid until 2027-07-09 (260 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

ns1.ensma.fr, ns2.ensma.fr

Found

Parent zone: fr
Delegation from: d.nic.fr (194.0.9.1)
NS at the parent: ns1.ensma.fr, ns2.ensma.fr
NS in the zone: ns1.ensma.fr, ns2.ensma.fr

Nameserver	Addresses	Network (AS)	Glue
ns1.ensma.fr	193.55.167.1 2001:660:6504::1	AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR	193.55.167.1 2001:660:6504::1
ns2.ensma.fr	193.55.167.9 2001:660:6504::9	AS2200 FR-RENATER - Renater, FR AS2200 FR-RENATER - Renater, FR	193.55.167.9 2001:660:6504::9

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.ensma.fr, ns2.ensma.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: ns1.ensma.fr, ns2.ensma.fr.
✓ All names resolve #9

Every nameserver name has an address and is not an alias.
!

Nameservers in one network

all IPv4 addresses are in 193.55.167.0/24; all IPv6 addresses are in 2001:660:6504::/48. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).

#10
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
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

info

4 of 4 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.ensma.fr 193.55.167.1	NOERROR, 19 ms, authoritative	no	yes / yes	refused	[Redacted]
ns1.ensma.fr 2001:660:6504::1	NOERROR, 20 ms, authoritative	no	yes / yes	refused	[Redacted]
ns2.ensma.fr 193.55.167.9	NOERROR, 22 ms, authoritative	no	yes / yes	refused	[Redacted]
ns2.ensma.fr 2001:660:6504::9	NOERROR, 24 ms, authoritative	no	yes / yes	refused	[Redacted]

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.
i

Identifying string disclosed

These nameservers answer version queries with a string that is not a version number: ns1.ensma.fr: "[Redacted]"; ns2.ensma.fr: "[Redacted]".

#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 2024058028 · primary ns1.ensma.fr

Found

Primary (MNAME): ns1.ensma.fr
Contact (RNAME): dns.ensma.fr
Serial: 2024058028
Refresh / retry: 21600 s / 7200 s
Expire: 1814400 s
Negative TTL: 21600 s

Serial per nameserver

Nameserver	Serial
ns1.ensma.fr (193.55.167.1)	2024058028
ns1.ensma.fr (2001:660:6504::1)	2024058028
ns2.ensma.fr (193.55.167.9)	2024058028
ns2.ensma.fr (2001:660:6504::9)	2024058028

Checks

✓ Serial 2024058028 everywhere #22

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

SOA refresh 6h, retry 2h, expire 21d, negative TTL 6h.
✓ Primary is a public nameserver #24

The primary nameserver ns1.ensma.fr is one of the listed nameservers.
✓ Contact dns@ensma.fr #25

The SOA RNAME dns.ensma.fr means dns@ensma.fr.
✓ Timestamp serial #26

The serial 2024058028 is a Unix timestamp (2034-02-20 14:20 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC
Signatures valid until: 3 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
1689	ECDSAP256SHA256 (13)	SHA256 DC58B16DAA1822C5…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
1689	KSK (257)	ECDSAP256SHA256 (13)

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 1689 (SHA256).
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13).
✓ Signatures valid until 2026-11-03 #30

The earliest DNSKEY/SOA signature expires at 2026-11-03 14:45 UTC.
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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

warn

15 records at the apex

Found

Read from: 193.55.167.1:53

Type	Value	TTL
SOA	ns1.ensma.fr. dns.ensma.fr. 2024058028 21600 7200 1814400 21600	86400
NS	ns2.ensma.fr.	86400
NS	ns1.ensma.fr.	86400
A	193.55.167.61	120
AAAA	2001:660:6504::61	120
MX	40 mx1.relay.renater.fr.	120
MX	40 mx2.relay.renater.fr.	120
TXT	"HARICA-q0HKhec7Skwsq62O47P"	86400
TXT	"MS=ms64126457"	86400
TXT	"jetbrains-domain-verification=93sf3wjl8ca534h5yf39w4fzo"	86400
TXT	"Foxit-domain-verification=79438ab9aef19f9dedb2669bb757d485"	86400
TXT	"v=spf1 mx a:smtp1.ensma.fr a:smtp2.ensma.fr a:smtp3.ensma.fr include:spf.relay.renater.fr -all"	86400
TXT	"apple-domain-verification=eN7S8k6IHIDLUsre"	86400
CAA	0 issuewild "harica.gr"	86400
CAA	0 issue "harica.gr"	86400

Checks

!

Very low TTLs

These records have a TTL below 5m, causing extra queries and slower lookups: A (2m), AAAA (2m), MX (2m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 1d; resolvers may use either.

#32
✓ 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.