ASN Lookup

Look up ASN network overview, prefixes, peers, topology, facilities and more

Example： AS15169 (Google) · AS13335 (Cloudflare) · AS4134 (ChinaNet)
Instructions
What is ASN?

ASN (Autonomous System Number) is a unique number assigned to an autonomous system. Each ASN represents an independent network operator with its own routing policies and IP address space.

Queryable Info
  • Network overview and statistics
  • IPv4/IPv6 prefix lists
  • Peers and IX exchange points
  • Network topology (upstream/downstream)
  • Facilities and co-located networks