Random ASN Generator
ASNs are generated locally in your browser with the Web Crypto API.
Documentation-safe ASNs
Generate an Autonomous System Number in ASPLAIN notation for BGP configs, peering documentation, routing diagrams, and integration test fixtures.
Every value is drawn from an IANA-reserved range (RFC 5398 and RFC 6996) that can never be assigned to a real network, so it is safe to paste into public docs and commit to fixtures.