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Hostname

pfirst.jp

Last fetched

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

Nutrition Label

WHISPER CANON · pfirst.jpRouting diversity1.5/10Peering density8.1/10MOAS conflict✓ noneThreat-feed listings6.8/10WHOIS transparency6.7/10Resolver footprint4.6/10canon.whisper.security/host/pfirst.jp

Resolution chain

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

IPPrefixASNOperatorCountry
153.153.143.113153.128.0.0/10AS4713—JP

WHOIS identity

Registrar
—
Organization
p's-first co.
Contact emails

Subdomains

15 observed subdomains of pfirst.jp.

Subdomain
ap.pfirst.jp
assets.pfirst.jp
ec.pfirst.jp
jms.pfirst.jp
ma.pfirst.jp
nikko.pfirst.jp
recruit.pfirst.jp
sv1.pfirst.jp
training.pfirst.jp
www.pfirst.jp

Showing 10 of 15. View all subdomains →

Web-graph footprint

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

187 sites link to this hostname.

627 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

8 SPF mechanisms authorising senders for pfirst.jp.

MechanismTarget
SPF_Aproduction.ap01.psffirst.demandware.net
SPF_Astaging.ap01.psffirst.demandware.net
SPF_INCLUDE_spf.salesforce.com
SPF_INCLUDEcust-spf.exacttarget.com
SPF_INCLUDEgemini.oneoffice.jp
SPF_INCLUDEspf-bma.mpme.jp
SPF_INCLUDEspf.wingarc.smtps.jp
SPF_IP161.71.184.193/24

Related pages

Pivot deeper into the graph from pfirst.jp.

Cypher and MCP

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

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