| Callsign |
Region |
| AAA - ALZ |
United States of America |
| AMA - AOZ |
Spain |
| APA - ASZ |
Pakistan |
| ATA - AWZ |
India |
| AXA - AXZ |
Australia |
| AYA - AZZ |
Argentina |
| A2A - A2Z |
Botswana |
| A3A - A3Z |
Tonga |
| A4A - A4Z |
Oman |
| A5A - A5Z |
Bhutan |
| A6A - A6Z |
United Arab Emirates |
| A7A - A7Z |
Qatar |
| A8A - A8Z |
Liberia |
| A9A - A9Z |
Bahrain |
| BAA - BUZ |
China (People's Republic of) |
| BVA - BVZ |
Taiwan (Republic of China) |
| BWA - BZZ |
China (People's Republic of) |
| CAA - CEZ |
Chile |
| CFA - CKZ |
Canada |
| CLA - CMZ |
Cuba |
| CNA - CNZ |
Morocco |
| COA - COZ |
Cuba |
| CPA - CPZ |
Bolivia |
| CQA - CUZ |
Portugal |
| CVA - CXZ |
Uruguay |
| CYA - CZZ |
Canada |
| C2A - C2Z |
Nauru |
| C3A - C3Z |
Andorra |
| C4A - C4Z |
Cyprus |
| C5A - C5Z |
Gambia |
| C6A - C6Z |
Bahama |
| C7A - C7Z |
World Meteorological Organization |
| C8A - C9Z |
Mozambique |
| DAA - DRZ |
Germany |
| DSA - DTZ |
South Korea |
| DUA - DZZ |
Philippines |
| D2A - D3Z |
Angola |
| D4A - D4Z |
Cape Verde Islands |
| D5A - D5Z |
Liberia |
| D6A - D6Z |
Comoros |
| D7A - D9Z |
Korea (Republic of) |
|
