Retrieve WHOIS registration data for an Autonomous System Number (ASN). Autonomous System Numbers (ASNs) are used in the Border Gateway Protocol (BGP) to identify an IP network managed or connected to the Internet by a single organization. ASNs represent routing domains that exchange reachability information with other networks.
WHOIS registration data for Internet Protocol (IP) numbers are maintained by the Regional Internet Registries (RIRs) and contain registrant contact points along with technical details for each IP number registration. For ASNs, these records include organization names, administrative and technical contacts, allocation details, and registration metadata associated with the Autonomous System.
Use !whois-as to inspect the ownership, allocation, and delegation details of an ASN. This command focuses on ASN registration records rather than IP address or prefix routing data.
Usually, you do not need to prefix your query with !whois-as and just !whois should work fine.