TerreStar Networks, Inc., operating within the United States of America (North America & Caribbean region), is a mobile network identified by the Mobile Country Code (MCC) 311 and Mobile Network Code (MNC) 620. While perhaps not as widely known as major national carriers like Verizon, AT&T, or T-Mobile, TerreStar carved a niche for itself particularly focused around satellite-based mobile communication technologies. Historically, TerreStar aimed to deliver reliable connectivity, especially in areas with limited or non-existent terrestrial mobile coverage, and was targeting government, rural, and emergency services. This focus differentiates them from networks prioritising dense urban coverage. While the precise status and operational details of TerreStar might warrant verification against the latest industry reports, their contribution to expanding communication accessibility across the United States remains a noteworthy aspect of the country's diverse mobile landscape. The network's history and technology serve as an interesting example how specialized services can use the MCC/MNC system to deliver unique network coverage.