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Hostname

rfcastle.com

Last fetched

rfcastle.com resolves to 1 IPv4 address operated by AS131626 in TW. WHOIS lists iana:460 as the registrar.

Nutrition Label

WHISPER CANON · rfcastle.comRouting diversity1.5/10Peering density1.2/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency10.0/10Resolver footprint4.6/10canon.whisper.security/host/rfcastle.com

Resolution chain

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

IPPrefixASNOperatorCountry
103.118.26.99103.118.43.0/24AS131626—TW

WHOIS identity

Registrar
iana:460
Organization
coolpen wang
Contact emails

Subdomains

2 observed subdomains of rfcastle.com.

Subdomain
mail.rfcastle.com
www.rfcastle.com

Web-graph footprint

Distinct hostnames that link to or from rfcastle.com in the public web crawl.

13 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

6 SPF mechanisms authorising senders for rfcastle.com.

MechanismTarget
SPF_Arfcastle.com
SPF_INCLUDE_spf.google.com
SPF_INCLUDErelay.mailchannels.net
SPF_IP103.118.24.0/24
SPF_IP103.118.25.0/24
SPF_MXrfcastle.com

Related pages

Pivot deeper into the graph from rfcastle.com.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "rfcastle.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.