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Hostname

rk-sys.jp

Last fetched

rk-sys.jp resolves to 1 IPv4 address operated by AS7503 in JP.

Nutrition Label

WHISPER CANON · rk-sys.jpRouting diversity1.5/10Peering density2.4/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency6.7/10Resolver footprint8.3/10canon.whisper.security/host/rk-sys.jp

Resolution chain

rk-sys.jp resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
210.166.73.41210.166.64.0/19AS7503—JP

WHOIS identity

Registrar
—
Organization
air internet service co.,ltd.
Contact emails

Subdomains

6 observed subdomains of rk-sys.jp.

Subdomain
dev.rk-sys.jp
dev1.rk-sys.jp
dev2.rk-sys.jp
tds.rk-sys.jp
www1.rk-sys.jp
www2.rk-sys.jp

Web-graph footprint

Distinct hostnames that link to or from rk-sys.jp in the public web crawl.

103 sites link to this hostname.

11 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

2 SPF mechanisms authorising senders for rk-sys.jp.

MechanismTarget
SPF_INCLUDE_spf.r-keeper.jp
SPF_INCLUDEspf01.air.ad.jp

Related pages

Pivot deeper into the graph from rk-sys.jp.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "rk-sys.jp"})-[: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.