An Autonomous System Number (ASN) is
|| [a] unique 16 bit number assigned by the InterNIC that refers to a particular collection of networks under a common administration and sharing a common routing strategy.
Autonomous System Numbers are used by various routing protocols. AS numbers are assigned to the Regional Internet Registries by the IANA.
- ↑ DR3300-1-I, at 10.
- ↑ Privacy Impact Assessment EINSTEIN Program: Collecting, Analyzing, and Sharing Computer Security Information Across the Federal Civilian Government, at 7.