A
+26 Alto Demerara-Berbice
+26
Alto Tacutu-Alto Esequibo
B
+31 Barima-Waini
+31
+29 Berbice Oriental-Corentyne
+29
C
+26 Cuyuni-Mazaruni
+26
D
+29 Demerara-Mahaica
+29
G
+31 Georgetown
+31
I
+31 Islas Esequibo-Demerara Occidental
+31
