+1-670-(3280000...3289999): Saipan, Northern Mariana Islands (MP) Xem thêm về +1-670-(3280000...3289999)
+1-670-(4330000...4339999): Tinian, Northern Mariana Islands (MP) Xem thêm về +1-670-(4330000...4339999)
+1-670-(5320000...5329999): Rota, Northern Mariana Islands (MP) Xem thêm về +1-670-(5320000...5329999)
+1-670-(6640000...6649999): Saipan, Northern Mariana Islands (MP) Xem thêm về +1-670-(6640000...6649999)
+1-670-(6820000...6829999): Saipan, Northern Mariana Islands (MP) Xem thêm về +1-670-(6820000...6829999)
