Hostname

jca2021.or.jp

Last fetched Wed, 05 Aug 2026 12:54:47 GMT

jca2021.or.jp resolves to 1 IPv4 address operated by SAKURA-C - SAKURA Internet Inc. in JP.

Nutrition Label

Resolution chain

jca2021.or.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
49.212.207.165	49.212.0.0/16	AS9371	SAKURA-C - SAKURA Internet Inc.	JP

WHOIS identity

No WHOIS records are currently associated with jca2021.or.jp in WhisperGraph.

Subdomains

1 observed subdomain of jca2021.or.jp.

Subdomain
www.jca2021.or.jp

Web-graph footprint

Distinct hostnames that link to or from jca2021.or.jp in the public web crawl.

18 sites link to this hostname.

81 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

jca2021-or-jp.mail.protection.outlook.com

SPF policy

1 SPF mechanism authorising senders for jca2021.or.jp.

Mechanism	Target
SPF_INCLUDE	spf.protection.outlook.com

Pivot deeper into the graph from jca2021.or.jp.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "jca2021.or.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.