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Hostname

sigma-cf.com

Last fetched

sigma-cf.com has no current public IPv4 resolution in WhisperGraph; WHOIS lists iana:141 as the registrar.

Nutrition Label

WHISPER CANON · sigma-cf.comRouting diversity0.0/10Peering density0.0/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency10.0/10Resolver footprint3.2/10canon.whisper.security/host/sigma-cf.com

Resolution chain

sigma-cf.com has no current public IPv4 resolution in WhisperGraph. The WHOIS record below is the only graph data we have on this hostname.

WHOIS identity

Registrar
iana:141
Organization
sigma corporate finance
Contact emails

Subdomains

4 observed subdomains of sigma-cf.com.

Subdomain
mail.sigma-cf.com
mailing.sigma-cf.com
remote.sigma-cf.com
www.sigma-cf.com

Web-graph footprint

Distinct hostnames that link to or from sigma-cf.com in the public web crawl.

7 sites link to this hostname.

13 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

4 SPF mechanisms authorising senders for sigma-cf.com.

MechanismTarget
SPF_INCLUDEspf.protection.outlook.com
SPF_INCLUDEspfhard.crsend.com
SPF_IP62.246.56.137
SPF_IP87.139.58.35

Related pages

Pivot deeper into the graph from sigma-cf.com.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "sigma-cf.com"})-[: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.