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Hostname

21ca.ac

Last fetched

21ca.ac resolves to 2 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA. WHOIS lists iana:1068 as the registrar.

Nutrition Label

WHISPER CANON · 21ca.acRouting diversity2.4/10Peering density10.0/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency3.3/10Resolver footprint3.2/10canon.whisper.security/host/21ca.ac

Resolution chain

21ca.ac resolves to 2 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
104.21.60.19104.21.48.0/20AS13335CLOUDFLARENET - Cloudflare, Inc.CA
172.67.187.184172.67.176.0/20AS13335CLOUDFLARENET - Cloudflare, Inc.CA

WHOIS identity

Registrar
iana:1068
Organization
privacy service provided by withheld for privacy ehf
Contact emails
—

Subdomains

1 observed subdomain of 21ca.ac.

Subdomain
8cbf4df4d782.21ca.ac

Web-graph footprint

Distinct hostnames that link to or from 21ca.ac in the public web crawl.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

SPF policy

3 SPF mechanisms authorising senders for 21ca.ac.

MechanismTarget
SPF_A21ca.ac
SPF_IP185.175.59.111
SPF_MX21ca.ac

Related pages

Pivot deeper into the graph from 21ca.ac.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "21ca.ac"})-[: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.