AS208172 — PV-HOSTED - Proton AG(CH)

Nutrition Label

Routing footprint

AS208172 announces 74 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

• 72.251.208.0/24
• 72.251.209.0/24
• 72.251.210.0/24
• 72.251.211.0/24
• 72.251.212.0/24
• 72.251.213.0/24
• 72.251.214.0/24
• 72.251.215.0/24
• 72.251.216.0/24
• 72.251.217.0/24
• 72.251.218.0/24
• 72.251.219.0/24
• 72.251.220.0/24
• 72.251.221.0/24
• 72.251.222.0/24
• 81.27.86.0/24
• 134.82.68.0/24
• 134.82.69.0/24
• 134.82.70.0/24
• 134.82.71.0/24
• 134.82.73.0/24
• 134.82.74.0/24
• 134.82.75.0/24
• 134.82.77.0/24
• 134.82.78.0/24

Peering ecosystem

5 distinct peers via BGP. The first 5 are listed below.

Blast radius

Count of dependent hostnames if AS208172 disappeared from the routing table.

234 hostnames depend on this network.Exact count across all 62 announced prefixes. Snapshot Fri, 03 Jul 2026 20:00:17 GMT.

MOAS / hijack watch

Prefixes routed by AS208172 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.

No active MOAS conflicts. Every prefix announced by AS208172 is unique to AS208172 in the current routing snapshot.

Threat posture

Related pages

Pivot deeper into the graph from AS208172.

• Country · CH
• Peer · HOST-AS-AP - Host Universal Pty LtdAS136557
• Prefix · 72.251.208.0/24
• Live MOAS conflicts feed
• Threat feed · Spamhaus DROP
• Glossary · What is BGP?
• Whisper Internet Directory — home

Cypher and MCP

Reproduce the headline metric directly against graph.whisper.security:

MATCH (a:ASN {name: "AS208172"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS country

Or query Whisper from your own LLM workflow via the Whisper MCP server.