LIR (Local Internet Registry) is an organization responsible for the allocation and management of IP addresses and autonomous systems (AS) within its region. LIRs are created to provide their customers (organizations or individuals) with IP addresses and AS that can be used for internet access.
LIRs receive blocks of IP addresses and AS from RIRs (Regional Internet Registries), which, in turn, receive these blocks from IANA (Internet Assigned Numbers Authority). LIRs are also responsible for maintaining the accuracy and currency of the IP address and AS registries they manage, as well as collaborating with other LIRs for information exchange and dispute resolution.