Effective January 1st, 2024 – Organizations with number resources (IPv4, IPv6 and Autonomous System Numbers or ASNs) in the ARIN registry must pay an annual fee for their Registration Service Plan (RSP). The size of this plan is determined on the submission of a resource request. Initial fees are paid when receiving IP addresses or ASNs from ARIN for the first time and will set your future anniversary date – subsequent yearly payments to be based on that RSP category. Any organizations owning only ASN’s however, don’t qualify for an RSP but instead have to make individual one-time payments per unit as listed by applicable requirements.