NRENum.net is an ENUM service for academia
"Having gained partners from North America, Latin America and Asia Pacific, NRENum.net has grown to a global, production-grade, community service in recent years. As one of the key building blocks of global unified communications, it is TERENA's mission to coordinate and continuously enhance the service for the benefit of the entire research and education community in a sustainable manner."
Michael Nowlan, Chief Technical Officer at TERENA
Currently 34 country codes are delegated in NRENum.net. More information about the service can be found here.