Vinaphone: 091,094,0123,0124(2-9),0125,0127,0129(2-5)
MobiFone: 090,093,0120,0121,0122,0126,0128
Viettel: 097,098,016
EVN: 096
Sfone: 095
VietNamobile: 092
GTel (Beeline): 0199