Skip to content

Hostname

casdoor.err4.com

Last fetched

casdoor.err4.com resolves to 1 IPv4 address operated by AS45090 in CN.

Nutrition Label

WHISPER CANON · casdoor.err4.comRouting diversity1.5/10Peering density4.8/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency0.0/10Resolver footprint0.0/10canon.whisper.security/host/casdoor.err4.com

Resolution chain

casdoor.err4.com resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
43.138.28.21643.138.0.0/18AS45090—CN
43.138.28.21643.138.0.0/18AS45090—CN

WHOIS identity

No WHOIS records are currently associated with casdoor.err4.com in WhisperGraph.

Threat posture

History

Related pages

Pivot deeper into the graph from casdoor.err4.com.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "casdoor.err4.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.