What is a "sponsoring" LIR?
Any LIR can be described as a "sponsoring" LIR if it facilitates an End User obtaining resources directly from the RIPE NCC. A sponsoring LIR will set up an End User Assignment Agreement with their customer (the End User), and request the resources from the RIPE NCC on their behalf.
As indicated in the End User Assignment Agreement, the sponsoring LIR is responsible for keeping the registration data up to date. This includes helping the End User to update their objects if required, for example, if new contacts need to be added or if the routing policy of the End User changes.
It also includes informing the RIPE NCC if the assignments are no longer required, or if the contract is changed or otherwise terminated.