learnthings.fr

Checked 22 October 2026, 03:47 UTC · via 8.8.8.8
✗Problems found
21 passed 4 warnings 1 failed 5 info

Registration

warn

.fr country-code · SCALEWAY · expires 2026-11-12

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
SCALEWAY
Registered
12 November 2022
Last changed
6 May 2026
Expires
12 November 2026
Status
client transfer prohibited
Registry nameservers
ns1.o2switch.net, ns2.o2switch.net
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 in 21 days
    The registration expires on 2026-11-12. Make sure it is renewed.
    #3
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.o2switch.net, ns2.o2switch.net

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
ns1.o2switch.net, ns2.o2switch.net
NS in the zone
ns1.o2switch.net, ns2.o2switch.net
NameserverAddressesNetwork (AS)Glue
ns1.o2switch.net109.234.160.5AS50474 O2SWITCH - O2SWITCH SAS, FR-
ns2.o2switch.net109.234.161.5AS50474 O2SWITCH - O2SWITCH SAS, FR-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.o2switch.net, ns2.o2switch.net.
    #6
  • ✓ 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 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS50474 (O2SWITCH - O2SWITCH SAS, 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 .net
    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.o2switch.net 109.234.160.5NOERROR, 22 ms, authoritativenono / yesrefusedPowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)
ns2.o2switch.net 109.234.161.5NOERROR, 20 ms, authoritativenono / yesrefusedPowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)

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.o2switch.net: "PowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)"; ns2.o2switch.net: "PowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)". Hide or replace the version string.
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns1.o2switch.net (109.234.160.5): dial tcp 109.234.160.5:53: i/o timeout; ns2.o2switch.net (109.234.161.5): dial tcp 109.234.161.5:53: i/o timeout.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2026091601 · primary ns1.o2switch.net

Found

Primary (MNAME)
ns1.o2switch.net
Contact (RNAME)
sysadmin.o2switch.fr
Serial
2026091601
Refresh / retry
3600 s / 1800 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.o2switch.net (109.234.160.5)2026091601
ns2.o2switch.net (109.234.161.5)2026091601

Checks

  • ✓ Serial 2026091601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 30m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.o2switch.net is one of the listed nameservers.
  • ✓ Contact sysadmin@o2switch.fr #25
    The SOA RNAME sysadmin.o2switch.fr means sysadmin@o2switch.fr.
  • ✓ Date-based serial #26
    The serial 2026091601 follows the YYYYMMDDnn convention (2026-09-16).

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
109.234.160.5:53
TypeValueTTL
SOAns1.o2switch.net. sysadmin.o2switch.fr. 2026091601 3600 1800 1209600 8640086400
NSns1.o2switch.net.86400
NSns2.o2switch.net.86400
A109.234.165.12914400
MX5 ALT1.ASPMX.L.GOOGLE.COM.14400
MX1 ASPMX.L.GOOGLE.COM.14400
MX10 ALT3.ASPMX.L.GOOGLE.COM.14400
MX10 ALT4.ASPMX.L.GOOGLE.COM.14400
MX5 ALT2.ASPMX.L.GOOGLE.COM.14400
TXT"brevo-code:92813f6766a176d552e2c45981b1a086"14400
TXT"google-site-verification=rY4zGQG9CFaiV2siDG-8hBGSSoMii6kk_XIIaSy8lZ4"14400
TXT"v=spf1 mx a ip4:109.234.165.129 ip4:109.234.161.107 include:spf.jabatus.fr include:_spf.google.com ~all"14400
TXT"google-site-verification=RzZK2OxBCnuxMDEZy93Wp7kAKbjXGwnT8NbWJNbJlzQ"14400

Checks

  • ✓ TTLs within range #32
    TTLs: A 4h, MX 4h, 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