Hostname

bac.ac.jp

Last fetched Tue, 30 Jun 2026 03:05:09 GMT

bac.ac.jp resolves to 1 IPv4 address operated by AS17511 in JP.

Nutrition Label

Resolution chain

bac.ac.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
103.199.133.71	103.199.132.0/22	AS17511	—	JP

WHOIS identity

No WHOIS records are currently associated with bac.ac.jp in WhisperGraph.

Subdomains

4 observed subdomains of bac.ac.jp.

Subdomain
ams.bac.ac.jp
cms.bac.ac.jp
weare.bac.ac.jp
www.bac.ac.jp

Web-graph footprint

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

99 sites link to this hostname.

82 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

smtp.google.com

SPF policy

1 SPF mechanism authorising senders for bac.ac.jp.

Mechanism	Target
SPF_INCLUDE	vista.co.jp

Pivot deeper into the graph from bac.ac.jp.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "bac.ac.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.