City Name / Region National Dialing Format International Dialing Format
Yen Bai0 (29) 2XXXXX+84 (29) 2XXXXX
Yen Bai0 (29) 4XXXXX+84 (29) 4XXXXX
Yen Bai0 (29) 5XXXXX+84 (29) 5XXXXX
Yen Bai0 (29) 6XXXXX+84 (29) 6XXXXX
Yen Bai0 (29) 7XXXXX+84 (29) 7XXXXX
Yen Bai0 (29) 8XXXXX+84 (29) 8XXXXX
Yen Bai0 (29) 9XXXXX+84 (29) 9XXXXX