КодСтранаРегионГородОператорДобавлено
+12-40СШАMD W Maryland: Silver Spring, Frederick, Gaithersbur2013-08-22
+12-40СШАGaithersburg, MD2013-10-18
+124-04-13СШАPrince George'sHyattsville, MDOmnipoint Communications Cap Operations, Cell Number2013-10-18