isae-supaero.fr

Checked 22 October 2026, 03:32 UTC · via 8.8.8.8
!Passed with warnings
20 passed 5 warnings 0 failed 6 info

Registration

info

.fr country-code · GIP RENATER · expires 2027-06-20

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
GIP RENATER
Registered
20 June 2014
Last changed
15 September 2026
Expires
20 June 2027
Status
active
Registry nameservers
filaong.isae.fr, supns.isae.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 2027-06-20 #3
    The registration is valid until 2027-06-20 (241 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

filaong.isae.fr, supns.isae.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
filaong.isae.fr, supns.isae.fr
NS in the zone
filaong.isae-supaero.fr, supns.isae-supaero.fr
NameserverAddressesNetwork (AS)Glue
filaong.isae-supaero.fr (zone only)192.93.254.38AS1715 FR-REMIP2000 - Renater, FR-
filaong.isae.fr (parent only)192.93.254.38AS1715 FR-REMIP2000 - Renater, FR192.93.254.38
supns.isae-supaero.fr (zone only)192.93.254.35AS1715 FR-REMIP2000 - Renater, FR-
supns.isae.fr (parent only)192.93.254.35AS1715 FR-REMIP2000 - Renater, FR192.93.254.35

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: filaong.isae.fr, supns.isae.fr.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: filaong.isae.fr, supns.isae.fr; only in the zone: filaong.isae-supaero.fr, supns.isae-supaero.fr. filaong.isae-supaero.fr, filaong.isae.fr, supns.isae-supaero.fr, supns.isae.fr report NS filaong.isae-supaero.fr supns.isae-supaero.fr.
    #7
  • ✓ 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 one network
    all IPv4 addresses are in 192.93.254.0/24. 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 (AS1715 (FR-REMIP2000 - 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
filaong.isae-supaero.fr 192.93.254.38NOERROR, 28 ms, authoritativenoyes / yesrefused9.9.4-RedHat-9.9.4-38.el7_3.2
filaong.isae.fr 192.93.254.38NOERROR, 27 ms, authoritativenoyes / yesrefused9.9.4-RedHat-9.9.4-38.el7_3.2
supns.isae-supaero.fr 192.93.254.35NOERROR, 28 ms, authoritativenoyes / yesrefused9.9.4-RedHat-9.9.4-51.el7
supns.isae.fr 192.93.254.35NOERROR, 27 ms, authoritativenoyes / yesrefused9.9.4-RedHat-9.9.4-51.el7

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: filaong.isae-supaero.fr: "9.9.4-RedHat-9.9.4-38.el7_3.2"; filaong.isae.fr: "9.9.4-RedHat-9.9.4-38.el7_3.2"; supns.isae-supaero.fr: "9.9.4-RedHat-9.9.4-51.el7"; supns.isae.fr: "9.9.4-RedHat-9.9.4-51.el7". 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.

SOA

pass

serial 2026102123 · primary filaong.isae-supaero.fr

Found

Primary (MNAME)
filaong.isae-supaero.fr
Contact (RNAME)
root.isae-supaero.fr
Serial
2026102123
Refresh / retry
21600 s / 7200 s
Expire
3600000 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
filaong.isae-supaero.fr (192.93.254.38)2026102123
filaong.isae.fr (192.93.254.38)2026102123
supns.isae-supaero.fr (192.93.254.35)2026102123
supns.isae.fr (192.93.254.35)2026102123

Checks

  • ✓ Serial 2026102123 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 6h, retry 2h, expire 1000h, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver filaong.isae-supaero.fr is one of the listed nameservers.
  • ✓ Contact root@isae-supaero.fr #25
    The SOA RNAME root.isae-supaero.fr means root@isae-supaero.fr.
  • ✓ Date-based serial #26
    The serial 2026102123 follows the YYYYMMDDnn convention (2026-10-21).

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

info

13 records at the apex

Found

Read from
192.93.254.38:53
TypeValueTTL
SOAfilaong.isae-supaero.fr. root.isae-supaero.fr. 2026102123 21600 7200 3600000 8640086400
NSsupns.isae-supaero.fr.86400
NSfilaong.isae-supaero.fr.86400
A192.93.254.12286400
MX50 mx1.relay.renater.fr.86400
MX50 mx2.relay.renater.fr.86400
TXT"MS=MS=ms85542824"86400
TXT"adobe-idp-site-verification=7ac4462e93608765f9e44490b15f006ae9e7e9a8c4f34d02e7ac1fa3147dda86"86400
TXT"apple-domain-verification=v3K3UYaVII61uodg"86400
TXT"HARICA-VvRkNFp31PBJE8CoC2U"86400
TXT"v=spf1 ip4:192.93.254.80 ip4:192.93.254.98 ip4:192.93.254.105 include:spf.relay.renater.fr include:spf.eudonet.com include:spf-eu.exlibrisgroup.com include:spf.mailjet.com include:spf.tipimail.com include:spf.protection.outlook.com ~all"86400
TXT"google-site-verification=-ZOiNI0F_opDWCuXMhVWt41yf1I98t9xZ_wYOMoOT2s"86400
TXT"brevo-code:3481bfb67e0cf077c69f0dc668aa92d1"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 1d, NS 1d. The NS TTL at the parent is 1h and in the zone 1d; 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.
  • 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