Hostname

bks.co.jp

Last fetched Sun, 19 Jul 2026 11:57:30 GMT

bks.co.jp resolves to 1 IPv4 address operated by AS131921 in JP.

Nutrition Label

Resolution chain

bks.co.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
153.123.7.51	153.124.208.0/20	AS131921	—	JP

WHOIS identity

Registrar: —
Organization: business kyoiku shuppan sha
Contact emails: —

Subdomains

1 observed subdomain of bks.co.jp.

Subdomain
www.bks.co.jp

Web-graph footprint

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

91 sites link to this hostname.

47 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

wxa105.wadax-sv.jp

SPF policy

3 SPF mechanisms authorising senders for bks.co.jp.

Mechanism	Target
SPF_INCLUDE	_spf-sd.wadax-sv.jp
SPF_IP	153.123.7.51
SPF_IP	183.90.246.2

Pivot deeper into the graph from bks.co.jp.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "bks.co.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.