City Name / Region National Dialing Format International Dialing Format
Thanh Hoa0 (37) 2XXXXX+84 (37) 2XXXXX
Thanh Hoa0 (37) 4XXXXX+84 (37) 4XXXXX
Thanh Hoa0 (37) 5XXXXX+84 (37) 5XXXXX
Thanh Hoa0 (37) 6XXXXX+84 (37) 6XXXXX
Thanh Hoa0 (37) 7XXXXX+84 (37) 7XXXXX
Thanh Hoa0 (37) 8XXXXX+84 (37) 8XXXXX
Thanh Hoa0 (37) 9XXXXX+84 (37) 9XXXXX