BGP AS Lookup

Calculates the ownership details for specific network addresses by querying Border Gateway Protocol (BGP) data. Users input an Autonomous System Number (ASN) or a range of IP addresses, and the tool queries public routing databases to determine which organization controls that block of internet space. It maps these identifiers back to their respective owning ASNs, providing visibility into the complex structure of global internet connectivity. Network engineers, security researchers, and IT professionals utilize this resource to map out network topologies and validate IP address assignments. By confirming the owner's ASN for a given range, users can quickly verify routing paths, troubleshoot connection issues, or perform due diligence on potential communication partners. It serves as a foundational utility for understanding internet infrastructure ownership at scale.