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Hostname

mail5.firstcb.com

Last fetched

mail5.firstcb.com resolves to 2 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA.

Nutrition Label

WHISPER CANON · mail5.firstcb.comRouting diversity2.4/10Peering density10.0/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency0.0/10Resolver footprint3.2/10canon.whisper.security/host/mail5.firstcb.com

Resolution chain

mail5.firstcb.com resolves to 2 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
104.18.40.164104.18.40.0/24AS13335CLOUDFLARENET - Cloudflare, Inc.CA
172.64.147.92172.64.147.0/24AS13335CLOUDFLARENET - Cloudflare, Inc.CA

WHOIS identity

No WHOIS records are currently associated with mail5.firstcb.com in WhisperGraph.

Subdomains

2 observed subdomains of mail5.firstcb.com.

Subdomain
_dmarc.mail5.firstcb.com
_mta-sts.mail5.firstcb.com

Threat posture

History

Mail and authentication

MX records

SPF policy

8 SPF mechanisms authorising senders for mail5.firstcb.com.

MechanismTarget
SPF_INCLUDEgateways.firstdata.com
SPF_INCLUDEone.zoho.com
SPF_INCLUDEspf.ess.barracudanetworks.com
SPF_INCLUDEspf.protection.outlook.com
SPF_INCLUDEspfref.jackhenry.com
SPF_INCLUDEu25582868.wl119.sendgrid.net
SPF_IP35.131.217.48/29
SPF_MXmail5.firstcb.com

Related pages

Pivot deeper into the graph from mail5.firstcb.com.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "mail5.firstcb.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.