КодСтранаРегионГородОператорДобавлено
+1 240 СШАMD W Maryland: Silver Spring, Frederick, Gaithersbur2013-08-22
+1 240 СШАGaithersburg, MD2013-10-18
+1 240 533СШАPrince George'sMount Rainier, MDTeleport Communications Group - DC, Landline2013-10-18