B
+26 Bougainville
+26
C
+27 Central Province
+27
E
+28 East New Britain
+28
Eastern Highlands
F
+27 Fly
+27
G
+29 Gulf
+29
M
+29 Madang
+29
+29 Morobe
+29
N
+27 National Capital District
+27
+28 New Ireland
+28
O
+27 Oro
+27
S
+26 Sandaun (West Sepik)
+26