Hostname

grs.co.jp

Last fetched Wed, 29 Jul 2026 15:29:38 GMT

grs.co.jp resolves to 1 IPv4 address operated by AS4713 in JP.

Nutrition Label

Resolution chain

grs.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
122.17.148.172	122.16.0.0/12	AS4713	—	JP

WHOIS identity

Registrar: —
Organization: greensystem corporation
Contact emails: —

Subdomains

1 observed subdomain of grs.co.jp.

Subdomain
www.grs.co.jp

Web-graph footprint

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

13 sites link to this hostname.

12 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

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

Mechanism	Target
SPF_A	grs.co.jp
SPF_INCLUDE	_spf.mwprem.net
SPF_INCLUDE	sender.zcsend.jp

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

Cypher and MCP

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

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