ensait.fr

Checked 22 October 2026, 02:45 UTC · via 8.8.8.8
✗Problems found
18 passed 6 warnings 1 failed 6 info

Registration

info

.fr country-code · GIP RENATER · expires 2026-12-15

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
GIP RENATER
Registered
15 December 1997
Last changed
31 January 2026
Expires
15 December 2026
Status
active
Registry nameservers
ns1.ensait.fr, ns2.ensait.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 2026-12-15 #3
    The registration is valid until 2026-12-15 (54 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.ensait.fr, ns2.ensait.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
ns1.ensait.fr, ns2.ensait.fr
NS in the zone
ns1.ensait.fr, ns2.ensait.fr
NameserverAddressesNetwork (AS)Glue
ns1.ensait.fr193.48.37.19AS2200 FR-RENATER - Renater, FR193.48.37.19
ns2.ensait.fr193.48.37.34AS2200 FR-RENATER - Renater, FR193.48.37.34

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.ensait.fr, ns2.ensait.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.ensait.fr, ns2.ensait.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 193.48.37.0/24. 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): 2 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

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.ensait.fr 193.48.37.19NOERROR, 20 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
ns2.ensait.fr 193.48.37.34NOERROR, 17 ms, authoritativenoyes / yesALLOWED (159 records)9.18.47-1~deb12u1-Debian

Checks

  • ✓ All respond #14
    All 2 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: ns1.ensait.fr: "9.18.49-1~deb12u2-Debian"; ns2.ensait.fr: "9.18.47-1~deb12u1-Debian". Hide or replace the version string.
    #17
  • ✗
    Zone transfer allowed
    These nameservers send the complete zone to anyone who asks (AXFR), exposing all host names: ns2.ensait.fr (193.48.37.34): 159 records. Restrict zone transfers to your secondary servers.
    #18
  • ✓ 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

warn

serial 2026092802 · primary ns1.ensait.fr

Found

Primary (MNAME)
ns1.ensait.fr
Contact (RNAME)
hostmaster.ensait.fr
Serial
2026092802
Refresh / retry
3600 s / 3600 s
Expire
1209600 s
Negative TTL
180 s

Serial per nameserver

NameserverSerial
ns1.ensait.fr (193.48.37.19)2026092802
ns2.ensait.fr (193.48.37.34)2026092802

Checks

  • ✓ Serial 2026092802 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 1h should be shorter than refresh 1h; negative caching TTL (minimum) 3m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1h, retry 1h, expire 14d, negative TTL 3m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.ensait.fr is one of the listed nameservers.
  • ✓ Contact hostmaster@ensait.fr #25
    The SOA RNAME hostmaster.ensait.fr means hostmaster@ensait.fr.
  • ✓ Date-based serial #26
    The serial 2026092802 follows the YYYYMMDDnn convention (2026-09-28).

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

warn

19 records at the apex

Found

Read from
193.48.37.19:53
TypeValueTTL
SOAns1.ensait.fr. hostmaster.ensait.fr. 2026092802 3600 3600 1209600 18060
NSns1.ensait.fr.60
NSns2.ensait.fr.60
A193.48.37.4160
MX50 mx2.relay.renater.fr.60
MX50 mx1.relay.renater.fr.60
TXT"v=spf1 include:spf.protection.outlook.com include:spf.relay.renater.fr include:spf.eudonet.com " "ip4:193.48.37.60 ip4:193.48.37.61 ip4:193.48.37.63 ip4:193.48.37.40 " "ip4:193.48.37.37 ip4:93.188.174.137 ip4:193.48.37.8 ip4:193.48.37.9 " "ip4:193.48.37.7 ip4:178.33.200.197 ip4:178.33.200.199 ~all"3600
TXT"google-site-verification=RiXCufy7pY410_YXlAT08xJ1ps8xoNgZLAbCatKWyGc"3600
TXT"Foxit-domain-verification=31c088527a184de164d5aff739a23108"3600
TXT"MS=98F42BA7514FF0C95AD8A42B15B0594C6E3B3E8D"3600
TXT"HARICA-aTWcJHJ0yPcfP36I92r"3600
TXT"ZOOM_verify_6mRTbGXFTdKI3dEPz0X0wQ"3600
TXT"google-site-verification=uOZkik5RC5YKMuyx8pkvp580z3WnAtwCO07iXoN91zc"3600
TXT"HARICA-sjhPuS11BVzm3c92jsK"3600
TXT"google-site-verification=nCFU1LGYHDg2Y7AYUzB5qZHW_EMvQbo5uXljDelSdRM"3600
TXT"HARICA-tWMY4jovuhprc4RYwo3"3600
TXT"apple-domain-verification=9ojdWYTb9czzzJMy"3600
TXT"brevo-code:952a34b9053b1315b62dfe8ee8cc8ce5"3600
TXT"workplace-domain-verification=xSCtRJ3mD2zaSnGYMh0YjuMer5L16B"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), MX (1m), NS (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 1m; 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.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35