Hostname
ptr.jp
Last fetched
ptr.jp resolves to 1 IPv4 address operated by AS4685 in JP.
Nutrition Label
Resolution chain
ptr.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 |
|---|---|---|---|---|
| 183.77.120.93 | 183.76.0.0/15 | AS4685 | — | JP |
WHOIS identity
- Registrar
- —
- Organization
- takeshi akiyama
- Contact emails
Subdomains
4 observed subdomains of ptr.jp.
| Subdomain |
|---|
| mail.ptr.jp |
| mta-sts.ptr.jp |
| www.ptr.jp |
Showing 3 of 4. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from ptr.jp in the public web crawl.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
6 SPF mechanisms authorising senders for ptr.jp.
| Mechanism | Target |
|---|---|
| SPF_A | ptr.jp |
| SPF_A | sv112.xserver.jp |
| SPF_INCLUDE | _spf.google.com |
| SPF_INCLUDE | spf.sender.xserver.jp |
| SPF_IP | 183.90.235.195 |
| SPF_MX | ptr.jp |
Related pages
Pivot deeper into the graph from ptr.jp.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "ptr.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 20Or query Whisper from your own LLM workflow via the Whisper MCP server.