Hostname

rt-net.jp

Last fetched Fri, 22 May 2026 12:56:25 GMT

rt-net.jp resolves to 1 IPv4 address operated by SAKURA-A SAKURA Internet Inc. in JP.

Nutrition Label

Resolution chain

rt-net.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
133.242.143.218	133.242.0.0/16	AS7684	SAKURA-A SAKURA Internet Inc.	JP

WHOIS identity

Registrar

—

Organization

Contact emails

jprs-staff@sakura.ad.jp

Subdomains

12 observed subdomains of rt-net.jp.

Subdomain
en.rt-net.jp
www.rt-net.jp
test.rt-net.jp
resources.rt-net.jp
renewal.rt-net.jp
ref.rt-net.jp
products.rt-net.jp
moon-rabbit.rt-net.jp
mail.rt-net.jp
letter.rt-net.jp
icra2024.rt-net.jp

Showing 11 of 12. View all subdomains →

Web-graph footprint

Distinct hostnames that link to or from rt-net.jp in the public web crawl.

174 sites link to this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

6 SPF mechanisms authorising senders for rt-net.jp.

Mechanism	Target
SPF_INCLUDE	_spf.google.com
SPF_INCLUDE	spf.haihaimail.jp
SPF_INCLUDE	spf.rt-shop.jp
SPF_IP	217.178.33.38
SPF_IP	59.106.19.204/32
SPF_MX	rt-net.jp

Pivot deeper into the graph from rt-net.jp.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "rt-net.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.