A system described herein may register a particular radio access network (“RAN”)-based interface, such as a R1 interface, with a RAN, such as an Open-RAN (“O-RAN”). The system may further be associated with a particular Service-Based Interface (“SBI”) of a core network that includes a plurality of network functions (“NFs”), where each NF is associated with a respective SBI. The system may receive, via the particular SBI, a request for RAN information from one or more NFs of the core network, obtain the RAN information from the RAN via the particular interface, output the requested RAN information to the one or more NFs of the core network via the particular SBI. Associating the system with the SBI may be performed without modifying a Network Repository Function (“NRF”) of the core network.