Great Plains Communications, Inc. is a regional telecommunications provider based in Blair, Nebraska, operating across the United States. While primarily known for its fiber optic internet and cable TV services, Great Plains Communications previously operated a mobile network in certain areas. Identifying the network is possible via its unique Mobile Country Code (MCC) of 312, which designates the United States, and its Mobile Network Code (MNC) of 550. This MCC/MNC combination allows mobile devices to identify and connect to the Great Plains Communications network where available. Compared to larger national carriers like Verizon (MCC 311, MNC 480) and AT&T (MCC 310, MNC 410), Great Plains Communications may have offered more localized coverage in specific regions of Nebraska and potentially neighboring states. The company's focus has largely shifted towards fixed-line services, though its earlier mobile network presence remains a relevant piece of its history within the broader US telecommunications landscape particularly with its MCC and MNC still being a part of their telecommunications registrations. It's a reminder that the mobile network landscape contained regional players besides the national giants.