Look up ASN (Autonomous System Number) information, geolocation, and network details for any IP address.
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, clearly defined routing policy to the Internet.
Each AS is assigned an Autonomous System Number (ASN), which is used to identify the AS in BGP (Border Gateway Protocol) routing. This tool allows you to look up ASN information for any IP address, including: