Domain report: caf.fr

Registration

info

.fr country-code · NAMEBAY · expires 2027-02-22

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.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 2027-02-22 #3

The registration is valid until 2027-02-22 (123 days).
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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.

warn

ns.caf.fr, ns1.caf.fr

Nameserver	Addresses	Network (AS)	Glue
ns.caf.fr	91.231.174.240	AS204835 IMS3 - Caisse Nationale des Allocations Familiales (CNAF), FR	91.231.174.240
ns1.caf.fr	91.231.174.241	AS204835 IMS3 - Caisse Nationale des Allocations Familiales (CNAF), FR	91.231.174.241
ns3.caf.fr (zone only)	195.138.204.240	AS204835 IMS3 - Caisse Nationale des Allocations Familiales (CNAF), FR	-

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2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns.caf.fr, ns1.caf.fr.

#6
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only in the zone: ns3.caf.fr. ns.caf.fr, ns1.caf.fr, ns3.caf.fr report NS ns.caf.fr ns1.caf.fr ns3.caf.fr.

#7
✓ Glue present and correct #8

Glue is published for the nameservers inside the zone: ns.caf.fr, ns1.caf.fr.
✓ 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.
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All nameservers in one AS

All nameserver addresses are announced by one network operator (AS204835 (IMS3 - Caisse Nationale des Allocations Familiales (CNAF), FR): 3 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
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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

fail

3 of 3 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns.caf.fr 91.231.174.240	NOERROR, 46 ms, authoritative	OPEN	no / yes	refused	-
ns1.caf.fr 91.231.174.241	NOERROR, 47 ms, authoritative	OPEN	no / yes	refused	-
ns3.caf.fr 195.138.204.240	NOERROR, 20 ms, authoritative	no	yes / yes	refused	-

✓ All respond #14

All 3 nameserver addresses answered.
✓ All authoritative #15

Every responding nameserver answers authoritatively for the zone.
✗

Open recursion

These nameservers resolve names for anyone, which makes them usable for DNS amplification attacks and cache poisoning: ns.caf.fr (91.231.174.240), ns1.caf.fr (91.231.174.241). Disable recursion on authoritative servers.

#16
✓ No version disclosed #17

The nameservers don't reveal their software version.
✓ 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: ns.caf.fr (91.231.174.240): dial tcp 91.231.174.240:53: i/o timeout; ns1.caf.fr (91.231.174.241): dial tcp 91.231.174.241:53: i/o timeout.

#19
✓ EDNS supported #20

All nameservers support EDNS(0).
✓ Public addresses #21

All nameserver addresses are publicly routable.

pass

serial 2021092987 · primary ns.caf.fr

✓ Serial 2021092987 everywhere #22

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

SOA refresh 6h, retry 1h, expire 7d, negative TTL 1h.
✓ Primary is a public nameserver #24

The primary nameserver ns.caf.fr is one of the listed nameservers.
✓ Contact postmaster@caf.fr #25

The SOA RNAME postmaster.caf.fr means postmaster@caf.fr.
✓ Date-based serial #26

The serial 2021092987 follows the YYYYMMDDnn convention (2021-09-29).

warn

Not signed

info

9 records at the apex

Type	Value	TTL
SOA	ns.caf.fr. postmaster.caf.fr. 2021092987 21600 3600 604800 3600	300
NS	ns.caf.fr.	300
NS	ns1.caf.fr.	300
NS	ns3.caf.fr.	300
A	66.22.41.120	300
MX	10 mel2.cnaf.fr.	300
MX	10 mel1.cnaf.fr.	300
TXT	"MS=ms16169453"	300
TXT	"v=spf1 ip4:195.138.204.0/24 ip4:91.231.174.0/24 include:spf.protection.outlook.com ~all"	300

✓ TTLs within range #32

TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 1h and in the zone 5m; resolvers may use either.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
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Wildcard record

A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.

#34
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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