cstb.fr

Checked 22 October 2026, 02:28 UTC · via 8.8.8.8
iAll checks passed
31 passed 0 warnings 0 failed 4 info

Registration

info

.fr country-code · NAMESHIELD · expires 2031-11-21

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
NAMESHIELD
Registered
31 December 1994
Last changed
10 August 2026
Expires
21 November 2031
Status
server update prohibited, server transfer prohibited, server delete prohibited, server recover prohibited
Registry nameservers
nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com, nsz.perf1.com, nsz.perf1.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 2031-11-21 #3
    The registration is valid until 2031-11-21 (1856 days).
  • ✓ Transfer locked #4
    Registry status: server update prohibited, server transfer prohibited, server delete prohibited, server recover prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

pass

nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com, nsz.perf1.com, nsz.perf1.fr

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com, nsz.perf1.com, nsz.perf1.fr
NS in the zone
nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com, nsz.perf1.com, nsz.perf1.fr
NameserverAddressesNetwork (AS)Glue
nsa.perf1.fr81.92.94.100 2a01:c8:100::100AS20756 NAMESHIELD - NAMESHIELD SAS, FR AS20756 NAMESHIELD - NAMESHIELD SAS, FR81.92.94.100 2a01:c8:100::100
nsb.perf1.com81.92.95.100 2a01:c8:101::100AS20756 NAMESHIELD - NAMESHIELD SAS, FR AS20756 NAMESHIELD - NAMESHIELD SAS, FR-
nsc.perf1.com152.89.172.100 2a09:35c0:102::100AS209510 NAMESHIELDGRP - NAMESHIELD SAS, FR AS209510 NAMESHIELDGRP - NAMESHIELD SAS, FR-
nsz.perf1.com208.80.124.13 2600:1801:6::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
nsz.perf1.fr208.80.126.13 2600:1802:7::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US208.80.126.13 2600:1802:7::1

Checks

  • ✓ 5 nameservers #6
    Delegated to nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com, nsz.perf1.com, nsz.perf1.fr.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ 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 different networks #10
    The nameservers are spread over 5 IPv4 /24s and 5 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS16552 (DIGICERT - Tiggee LLC, US): 4 addresses; AS20756 (NAMESHIELD - NAMESHIELD SAS, FR): 4 addresses; AS209510 (NAMESHIELDGRP - NAMESHIELD SAS, FR): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .fr.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

10 of 10 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
nsa.perf1.fr 81.92.94.100NOERROR, 5 ms, authoritativenoyes / yesrefusedSecure
nsa.perf1.fr 2a01:c8:100::100NOERROR, 9 ms, authoritativenoyes / yesrefusedSecure
nsb.perf1.com 81.92.95.100NOERROR, 4 ms, authoritativenoyes / yesrefusedSecure
nsb.perf1.com 2a01:c8:101::100NOERROR, 4 ms, authoritativenoyes / yesrefusedSecure
nsc.perf1.com 152.89.172.100NOERROR, 4 ms, authoritativenoyes / yesrefusedSecure
nsc.perf1.com 2a09:35c0:102::100NOERROR, 4 ms, authoritativenoyes / yesrefusedSecure
nsz.perf1.com 208.80.124.13NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
nsz.perf1.com 2600:1801:6::1NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
nsz.perf1.fr 208.80.126.13NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
nsz.perf1.fr 2600:1802:7::1NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast

Checks

  • ✓ All respond #14
    All 10 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: nsa.perf1.fr: "Secure"; nsb.perf1.com: "Secure"; nsc.perf1.com: "Secure"; nsz.perf1.com: "DNS Made Easy Anycast"; nsz.perf1.fr: "DNS Made Easy Anycast".
    #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 2026102201 · primary nsa.perf1.fr

Found

Primary (MNAME)
nsa.perf1.fr
Contact (RNAME)
technical.nameshield.net
Serial
2026102201
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
7200 s

Serial per nameserver

NameserverSerial
nsa.perf1.fr (81.92.94.100)2026102201
nsa.perf1.fr (2a01:c8:100::100)2026102201
nsb.perf1.com (81.92.95.100)2026102201
nsb.perf1.com (2a01:c8:101::100)2026102201
nsc.perf1.com (152.89.172.100)2026102201
nsc.perf1.com (2a09:35c0:102::100)2026102201
nsz.perf1.com (208.80.124.13)2026102201
nsz.perf1.com (2600:1801:6::1)2026102201
nsz.perf1.fr (208.80.126.13)2026102201
nsz.perf1.fr (2600:1802:7::1)2026102201

Checks

  • ✓ Serial 2026102201 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 2h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver nsa.perf1.fr is one of the listed nameservers.
  • ✓ Contact technical@nameshield.net #25
    The SOA RNAME technical.nameshield.net means technical@nameshield.net.
  • ✓ Date-based serial #26
    The serial 2026102201 follows the YYYYMMDDnn convention (2026-10-22).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
0 iterations, 0-byte salt
Signatures valid until
5 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
40070ECDSAP256SHA256 (13)SHA256 90380F6B517168E3…NO
27364ECDSAP256SHA256 (13)SHA256 F1923CBE26BE7344…yes

DNSKEY in the zone

Key tagRoleAlgorithm
27364KSK (257)ECDSAP256SHA256 (13)
47152ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • i
    Unused DS records
    These DS records match no key in the zone: key tag 40070 (SHA256). That is normal during a key rollover; otherwise remove them.
    #28
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-11-05 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-05 00:00 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

info

25 records at the apex

Found

Read from
81.92.94.100:53
TypeValueTTL
SOAnsa.perf1.fr. technical.nameshield.net. 2026102201 28800 7200 604800 720043200
NSnsz.perf1.com.86400
NSnsa.perf1.fr.86400
NSnsb.perf1.com.86400
NSnsz.perf1.fr.86400
NSnsc.perf1.com.86400
A81.92.94.5443200
A152.89.172.5643200
A81.92.95.5543200
AAAA2a01:c8:100::5443200
AAAA2a09:35c0:102::5643200
AAAA2a01:c8:101::5543200
MX0 cstb-fr.in.tmes.trendmicro.eu.43200
TXT"mongodb-site-verification=ewAOsKplqA8sscLaYtTf1hoNtd2HqSsc"300
TXT"docusign=5b3fecf0-808e-4834-a1c0-b86d1461ecc8"300
TXT"MS=ms59930395"300
TXT"5XXzcMnsaR2DCKgnWlb/ANu+z6Q="300
TXT"docusign=a889d183-522f-4652-84b3-724e1241b04a"300
TXT"JJNVHruRtjs2vQ/982jdB2pNpd4="300
TXT"J7VbesUBRinXWFtgCDxiYrbHVp200rD/BublG3L+quL3tpDBi4fNwxOvUuK5vmAybETYejuM+/vFREFHzcV1tw=="300
TXT"v=spf1 include:spf.tmes.trendmicro.com include:spf.tipimail.com ip4:46.235.17.249 ip4:46.235.17.250 ip4:46.235.17.251 ip4:46.235.17.252 include:eskerondemand.com ip4:83.118.197.50 ip4:159.117.240.108 ip4:82.97.16.59 include:_sp" "f-i.cegedim.fr ip4:82.97.8.85 ip4:82.97.8.87 include:amazonses.com -all"300
TXT"atlassian-domain-verification=eMrE1dkOqn2ZFmw/OPwMSS0THQFKbsNVj8pUYbdXFu7wT1FFpdWJpbRxuhkOSxSl"300
TXT"druide-validation-domaine=5f2dc170cb38d55f3f65b3f027ec06ef"300
TXT"ksh7fjg1mggndbw9q2tjmckq1v85knw3"300
TXT"nitro-verification-code=LTcxMjQ2NzQxMzQ0MjA5OTM2OTE="300

Checks

  • ✓ TTLs within range #32
    TTLs: A 12h, AAAA 12h, MX 12h, 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