Systems and methods are described for on-network device identification. A user device may make an application programming interface (API) call to an address associated with a network device. The API call may comprise an indication of an address associated with the user device. Based on the API call, the network device may send an indication of the address to a computing device associated with an on-network service. The computing device associated with the on-network service may determine that the user device is authorized to connect to a network or to access an on-network service.