Network
AS25 University of California at Berkeley
- Autonomous system number
- AS25
- Registered in
- US
- Registry
- ARIN
- ASN registered
- 1984-08-03
- IPv4 prefixes announced
- 12
- IPv6 prefixes announced
- 2
- Internet exchanges
- 0
- Data centres
- 0
- Internet users (estimate)
- ~2,859
- Company
- University of California, Berkeley - 12,122 employees
Prefix counts from the global routing table as of 2026-10-03. Not counted: 1 more prefixes this network originates that few routers see, inside address space AS2152 announces widely. Exchange and data-centre counts are what the network lists in PeeringDB. User estimate by APNIC Labs, 2026-09-30. Company facts from Wikidata.
Upstreams and peers, traceroute paths through it, where it hands off to its transit providers, routing history and alerts - free with an account, and queryable from Claude, ChatGPT and other AI agents through the BGPScout MCP server.
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