^Number^Bits^Description^Reference|
|0|16|Reserved|[[[http://www.iana.org/go/rfc1930|RFC1930]]]|
|1 - 23455|16|Public ASN's| |
|23456|16|Reserved for AS Pool Transition|[[[http://www.iana.org/go/rfc6793|RFC6793]]]|
|23457 - 64534|16|Public ASN's| |
|64000 - 64495|16|Reserved by IANA| |
|64496 - 64511|16|Reserved for use in documentation/sample code|[[[http://www.iana.org/go/rfc5398|RFC5398]]]|
|64512 - 65534|16|Reserved for Private Use| |
|65535|16|Reserved| |
|65536 - 65551|32|Reserved for use in documentation and sample code|[[[http://tools.ietf.org/html/rfc4893|RFC4893]]][[[http://www.iana.org/go/rfc5398|RFC5398]]]|
|65552 - 131071|32|Reserved| |
|131072 - 4199999999|32|Public 32-bit ASN's| |
|4200000000 - 4294967294|32|Reserved for Private Use|[[[http://www.iana.org/go/rfc6996|RFC6996]]]|
|4294967295|32|Reserved| |