Hostname

porta.co.jp

Last fetched Mon, 10 Aug 2026 08:22:39 GMT

porta.co.jp resolves to 1 IPv4 address operated by IDCF - IDC Frontier Inc. in JP.

Nutrition Label

Resolution chain

porta.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
203.183.146.34	203.183.144.0/21	AS4694	IDCF - IDC Frontier Inc.	JP

WHOIS identity

Registrar: —
Organization: jr west japan kyoto shopping center development
Contact emails: —

Subdomains

1 observed subdomain of porta.co.jp.

Subdomain
www.porta.co.jp

Web-graph footprint

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

311 sites link to this hostname.

198 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

msgw.jrw-g.net

SPF policy

2 SPF mechanisms authorising senders for porta.co.jp.

Mechanism	Target
SPF_INCLUDE	spf-bma.mpme.jp
SPF_IP	211.8.138.0/26

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

Cypher and MCP

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

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