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Hostname

mail.castletltd.com

Last fetched

mail.castletltd.com resolves to 1 IPv4 address operated by AS34270 in GB.

Nutrition Label

WHISPER CANON · mail.castletltd.comRouting diversity1.5/10Peering density2.8/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency0.0/10Resolver footprint4.6/10canon.whisper.security/host/mail.castletltd.com

Resolution chain

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

IPPrefixASNOperatorCountry
85.91.237.11285.92.115.0/24AS34270—GB

WHOIS identity

No WHOIS records are currently associated with mail.castletltd.com in WhisperGraph.

Threat posture

History

Mail and authentication

MX records

SPF policy

6 SPF mechanisms authorising senders for mail.castletltd.com.

MechanismTarget
SPF_INCLUDEspf.protection.outlook.com
SPF_IP148.105.0.0/16
SPF_IP198.2.128.0/18
SPF_IP205.201.128.0/20
SPF_IP81.130.136.219
SPF_IP85.91.237.112

Related pages

Pivot deeper into the graph from mail.castletltd.com.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "mail.castletltd.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.