Autonomous System Number List

An autonomous system (AS) is a collection of connected Internet Protocol (IP) routing prefixes under the control of one or more network operators on behalf of a single administrative entity or domain, that presents a common and clearly defined routing policy to the Internet. Each AS is assigned a unique autonomous system number (ASN), for use in Border Gateway Protocol (BGP) routing.

AS numbers are assigned to Local Internet Registries (LIRs) and end user organizations by their respective Regional Internet Registries (RIRs), which in turn receive blocks of ASNs for reassignment from the Internet Assigned Numbers Authority (IANA). The IANA also maintains a registry of ASNs which are reserved for private use (and should therefore not be announced to the global Internet). The allocated AS numbers are defined as 16-bit and 32-bit integers. The length range of 16-bit is between 0 and 65535, and the length range of 32-bit is between 0 and 4294967294. At present, the 16-bit integers which allowed for a maximum of 65,536 assignments is mostly used.

AS Number AS Organization Country Code
AS744 AFCONC-BLOCK2-AS US (United States)
AS745 AFCONC-BLOCK2-AS US (United States)
AS747 DNIC-AS-00747 US (United States)
AS748 DNIC-AS-00748 US (United States)
AS749 DNIC-AS-00749 US (United States)
AS760 Vienna University Computer Center AT (Austria)
AS764 Prime Ministers Office EU
AS766 Entidad Publica Empresarial ES (Spain)
AS768 DNIC-AS-00768 US (United States)
AS773 PARSONS-PGS-2 US (United States)
AS775 Renater EU
AS776 Renater EU
AS777 CEA-Saclay EU
AS781 Renater EU
AS782 Renater EU
AS784 HJFNET-AS US (United States)
AS786 Jisc Services Limited GB (United Kingdom)
AS789 Renater EU
AS797 AMERITECH-AS US (United States)
AS800 ONEWEB US (United States)
AS802 YORKU-AS CA (Canada)
AS803 SASKTEL CA (Canada)
AS806 SSC-299-806 CA (Canada)
AS808 GONET-ASN-1 CA (Canada)
AS813 UUNET-CANADA US (United States)
AS818 DOC-AS CA (Canada)
AS819 LARG-NET CA (Canada)
AS820 SSC-299-Z-820 CA (Canada)
AS823 UWO-AS CA (Canada)
AS837 SSC-299-Z-837 CA (Canada)
AS841 CANET2-ASN CA (Canada)
AS843 VOLTERRA-01 US (United States)
AS852 TELUS Communications CA (Canada)
AS855 CANET-ASN-4 CA (Canada)
AS857 GONET-ASN-17 CA (Canada)
AS858 GONET-ASN-17 CA (Canada)
AS859 GONET-ASN-17 CA (Canada)
AS860 GONET-ASN-17 CA (Canada)
AS861 GONET-ASN-17 CA (Canada)
AS862 GONET-ASN-17 CA (Canada)
AS863 GONET-ASN-17 CA (Canada)
AS864 GONET-ASN-17 CA (Canada)
AS865 GONET-ASN-17 CA (Canada)
AS866 GONET-ASN-17 CA (Canada)
AS867 GONET-ASN-17 CA (Canada)
AS868 GONET-ASN-17 CA (Canada)