A
+31 Attapeu
+31
B
+34 Bokeo Province
+34
+26 Bolikhamsai Province
+26
C
+31 Champasak Province
+31
H
+15 Houaphanh Province
+15
K
+24 Khammouane Province
+24
L
+28 Luang Namtha
+28
+27 Luang Phrabang
+27
O
+27 Oudomxay Province
+27
P
+20 Phongsaly
+20
S
+31 Sainyabuli
+31
+31 Salavan
+31
S
+25 Savannakhet
+25
+29 Sekong
+29
V
+26 Vientiane (airport)
+26
+28 Vientiane Province
+28
X
+21 Xiangkhouang Province
+21