Embodiments of systems and methods for Universal System Interface (USI) networking are generally described herein. In some embodiments, a USI request may be received by a station configured for heterogeneous wireless communication from an application service provider (ASP) over a first access network. The USI request may include a fully qualified domain name (FQDN) of a USI system for services provided by a network service provider (NSP) over a second access network. The station may then determine the USI system address based on the FQDN Other embodiments may be described and claimed.