| 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) | |
