Use !rdap-as to lookup Registration Data for an Autonomous System Number (ASN).

Registration data for Internet Protocol (IP) numbers are maintained by the Regional Internet Registries (RIR) and contain registrant contact points along with technical details for each IP number registration. RDAP provides structured registration data for ASNs, including organization names, contact points, allocation details, routing policy metadata, and RIR registry information.

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.

Some RIRs or organizations that use ASNs still publish certain ASN-related fields only through traditional WHOIS services. These may include historical registration notes, legacy allocation markers, routing policy comments, or other metadata not exposed via RDAP. For such cases, the whois lookup command !whois-as can be used to retrieve additional information.

Usually, you do not need to prefix an Autonomous System Number with !rdap-as and just !rdap should work fine.

Usage:
!rdap-as <asn>

Usage Examples:
!rdap AS4608
!rdap as39556
!rdap AS5
!rdap as12
!rdap asn14
!rdap ASN16
!rdap as42
!rdap as45
!rdap-as asn1299
!rdap-as asn1299
!rdap-as 3333


Also see:
!help !whois
!help !rdap