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Hostname

c4j.fr

Last fetched

c4j.fr resolves to 1 IPv4 address operated by AS15557 in FR. WHOIS lists registrar:w3 plus as the registrar.

Nutrition Label

WHISPER CANON · c4j.frRouting diversity1.5/10Peering density8.3/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency10.0/10Resolver footprint8.0/10canon.whisper.security/host/c4j.fr

Resolution chain

c4j.fr resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
37.71.184.15137.64.0.0/13AS15557—FR

WHOIS identity

Registrar
registrar:w3 plus
Organization
c 4j
Contact emails

Subdomains

3 observed subdomains of c4j.fr.

Subdomain
autodiscover.c4j.fr
mail.c4j.fr
www.c4j.fr

Web-graph footprint

Distinct hostnames that link to or from c4j.fr in the public web crawl.

10 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

6 SPF mechanisms authorising senders for c4j.fr.

MechanismTarget
SPF_Ac4j.fr
SPF_Aexchange.w3plus.fr
SPF_INCLUDEfirewall.w3plus.fr
SPF_INCLUDEspf.mailinblack.com
SPF_IP37.71.184.0/24
SPF_MXc4j.fr

Related pages

Pivot deeper into the graph from c4j.fr.

Cypher and MCP

Reproduce the resolution chain directly against graph.whisper.security:

MATCH (h:HOSTNAME {name: "c4j.fr"})-[:RESOLVES_TO]->(ip:IPV4)
      -[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
      -[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, asn.name AS asn, n.name AS operator
LIMIT 20

Or query Whisper from your own LLM workflow via the Whisper MCP server.