Hostname

jacn.jp

Last fetched Sat, 18 Jul 2026 00:01:35 GMT

jacn.jp resolves to 1 IPv4 address operated by AS9371 in JP.

Nutrition Label

Resolution chain

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

IP	Prefix	ASN	Operator	Country
49.212.243.38	49.213.4.0/24	AS9371	—	JP

WHOIS identity

Registrar

—

Organization

satoshi nakata

Contact emails

jprs-staff@sakura.ad.jp

Subdomains

1 observed subdomain of jacn.jp.

Subdomain
www.jacn.jp

Web-graph footprint

Distinct hostnames that link to or from jacn.jp in the public web crawl.

23 sites link to this hostname.

34 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

jacn.jp

SPF policy

2 SPF mechanisms authorising senders for jacn.jp.

Mechanism	Target
SPF_A	www3528.sakura.ne.jp
SPF_MX	jacn.jp

Pivot deeper into the graph from jacn.jp.

Cypher and MCP

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

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