BGP ASN Range Checker
Public vs Private Validator Utility
Supports 16-bit (0-65535) and 32-bit (0-4294967295) formats
RFC 6996 Reference
Private (16-bit)
64512 - 65534
Private (32-bit)
4.2B - 4.29B
Reserved
0, 65535, 4294967295
Quick Facts
- Public ASNs are globally routable.
- Private ASNs are for internal use only.
- Reserved ASNs should never appear in BGP updates.
- Supports up to 4,294,967,295.