КодСтранаРегионГородОператорДобавлено
+13-01СШАMD W Maryland: Silver Spring, Frederick, Camp Spring2013-08-22
+13-01СШАRockville, MD2013-10-18
+130-13-58СШАPrince George'sUpper Marlboro, MDLevel 3 Communications, Landline2013-10-18