Skip to content

Hostname

openletter.jp

Last fetched

openletter.jp resolves to 1 IPv4 address operated by AS7506 in JP.

Nutrition Label

WHISPER CANON · openletter.jpRouting diversity1.5/10Peering density4.4/10MOAS conflict✓ noneThreat-feed listings10.0/10WHOIS transparency6.7/10Resolver footprint4.0/10canon.whisper.security/host/openletter.jp

Resolution chain

openletter.jp resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IPPrefixASNOperatorCountry
157.7.107.51157.7.64.0/18AS7506—JP

WHOIS identity

Registrar
—
Organization
shin yamauchi
Contact emails

Subdomains

2 observed subdomains of openletter.jp.

Subdomain
test.openletter.jp
www.openletter.jp

Web-graph footprint

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

17 sites link to this hostname.

49 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

1 SPF mechanism authorising senders for openletter.jp.

MechanismTarget
SPF_INCLUDE_spf.lolipop.jp

Related pages

Pivot deeper into the graph from openletter.jp.

Cypher and MCP

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

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