ASN (Autonomous System Number)

ASN stands for "Autonomous System Number." It is a unique identifier used in computer networks, specifically in the Border Gateway Protocol (BGP) system, to designate autonomous systems (AS). An autonomous system is a collection of IP networks and routers under a single administrative entity, such as an internet service provider (ISP) or a large organization. Each autonomous system is assigned a globally unique ASN, which helps exchange routing information between different networks on the internet. BGP uses ASNs to determine the most efficient paths for routing traffic between autonomous systems, enabling the global interconnectivity of the internet.

ThreatNG External Attack Surface Management (EASM), Digital Risk Protection (DRP), and Security Ratings use various methods to discover and assess "ASN" (Autonomous System Number) within an organization's network. It identifies ASNs by mapping IP addresses to their corresponding autonomous systems, providing insights into network ownership and potential attack surfaces. Understanding ASNs is crucial for proactive threat mitigation and securing digital assets from external risks and attacks.