Hostname

ct4s.fr

Last fetched Sat, 04 Jul 2026 21:23:08 GMT

ct4s.fr resolves to 1 IPv4 address operated by AS29222 in CH. WHOIS lists registrar:scaleway as the registrar.

Nutrition Label

Resolution chain

ct4s.fr resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IP	Prefix	ASN	Operator	Country
195.15.221.74	195.15.192.0/18	AS29222	—	CH

WHOIS identity

Registrar: registrar:scaleway
Organization: ano nymous
Contact emails: —

Subdomains

1 observed subdomain of ct4s.fr.

Subdomain
www.ct4s.fr

Web-graph footprint

Distinct hostnames that link to or from ct4s.fr in the public web crawl.

12 sites linked to from this hostname.

Sample inbound links

pyragricnordest.fr

Sample outbound links

Threat posture

History

Mail and authentication

MX records

ct4s-fr.mail.protection.outlook.com

SPF policy

1 SPF mechanism authorising senders for ct4s.fr.

Mechanism	Target
SPF_INCLUDE	spf.protection.outlook.com

Pivot deeper into the graph from ct4s.fr.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "ct4s.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.