Hostname

p4u.ch

Last fetched Wed, 01 Jul 2026 20:50:14 GMT

p4u.ch resolves to 1 IPv4 address operated by AS8758 in CH.

Nutrition Label

Resolution chain

p4u.ch 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
185.166.96.68	185.166.96.0/22	AS8758	—	CH

WHOIS identity

Registrar: —
Organization: privasphere
Contact emails: —

Subdomains

4 observed subdomains of p4u.ch.

Subdomain
dev.p4u.ch
secmail-lab.p4u.ch
www.p4u.ch
zh.p4u.ch

Web-graph footprint

Distinct hostnames that link to or from p4u.ch in the public web crawl.

35 sites link to this hostname.

Sample inbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

2 SPF mechanisms authorising senders for p4u.ch.

Mechanism	Target
SPF_A	p4u.ch
SPF_INCLUDE	spf.iway.ch

Pivot deeper into the graph from p4u.ch.

Cypher and MCP

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

MATCH (h:HOSTNAME {name: "p4u.ch"})-[: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.