Prefix assignments by the International Telecommunications Union (ITU).
| Call Sign Series | Allocated to |
| T6A-T6Z | Afghanistan (Islamic State of) |
| YAA-YAZ | Afghanistan (Islamic State of) |
| ZAA-ZAZ | Albania (Republic of) |
| 7RA-7RZ | Algeria (People’s Democratic Republic of) |
| 7TA-7YZ | Algeria (People’s Democratic Republic of) |
| C3A-C3Z | Andorra (Principality of) |
| D2A-D3Z | Angola (Republic of) |
| V2A-V2Z | Antigua and Barbuda |
| AYA-AZZ | Argentine Republic |
| LOA-LWZ | Argentine Republic |
| L2A-L9Z | Argentine Republic |
| EKA-EKZ | Armenia (Republic of) |
| AXA-AXZ | Australia |
| VHA-VNZ | Australia |
| VZA-VZZ | Australia |
| OEA-OEZ | Austria |
| 4JA-4KZ | Azerbaijani Republic |
| C6A-C6Z | Bahamas (Commonwealth of the) |
| A9A-A9Z | Bahrain (State of) |
| S2A-S3Z | Bangladesh (People’s Republic of) |
| 8PA-8PZ | Barbados |
| EUA-EWZ | Belarus (Republic of) |
| ONA-OTZ | Belgium |
| V3A-V3Z | Belize |
| TYA-TYZ | Benin (Republic of) |
| A5A-A5Z | Bhutan (Kingdom of) |
| CPA-CPZ | Bolivia (Republic of) |
| E7A-E7Z | Bosnia and Herzegovina (Republic of) (WRC-07) |
| A2A-A2Z | Botswana (Republic of) |
| 8OA-8OZ | Botswana (Republic of) |
| PPA-PYZ | Brazil (Federative Republic of) |
| ZVA-ZZZ | Brazil (Federative Republic of) |
| V8A-V8Z | Brunei Darussalam |
| LZA-LZZ | Bulgaria (Republic of) |
| XTA-XTZ | Burkina Faso |
| 9UA-9UZ | Burundi (Republic of) |
| XUA-XUZ | Cambodia (Kingdom of) |
| TJA-TJZ | Cameroon (Republic of) |
| CFA-CKZ | Canada |
| CYA-CZZ | Canada |
| VAA-VGZ | Canada |
| VOA-VOZ | Canada |
| VXA-VYZ | Canada |
| XJA-XOZ | Canada |
| D4A-D4Z | Cape Verde (Republic of) |
| TLA-TLZ | Central African Republic |
| TTA-TTZ | Chad (Republic of) |
| CAA-CEZ | Chile |
| XQA-XRZ | Chile |
| 3GA-3GZ | Chile |
| BAA-BZZ | China (People’s Republic of) |
| XSA-XSZ | China (People’s Republic of) |
| 3HA-3UZ | China (People’s Republic of) |
| VRA-VRZ | China (People’s Republic of) – Hong Kong |
| XXA-XXZ | China (People’s Republic of) – Macao (WRC-07) |
| HJA-HKZ | Colombia (Republic of) |
| 5JA-5KZ | Colombia (Republic of) |
| D6A-D6Z | Comoros (Islamic Federal Republic of the) |
| TNA-TNZ | Congo (Republic of the) |
| TEA-TEZ | Costa Rica |
| TIA-TIZ | Costa Rica |
| TUA-TUZ | Côte d’Ivoire (Republic of) |
| 9AA-9AZ | Croatia (Republic of) |
| CLA-CMZ | Cuba |
| COA-COZ | Cuba |
| T4A-T4Z | Cuba |
| C4A-C4Z | Cyprus (Republic of) |
| H2A-H2Z | Cyprus (Republic of) |
| P3A-P3Z | Cyprus (Republic of) |
| 5BA-5BZ | Cyprus (Republic of) |
| OKA-OLZ | Czech Republic |
| HMA-HMZ | Democratic People’s Republic of Korea |
| P5A-P9Z | Democratic People’s Republic of Korea |
| 9OA-9TZ | Democratic Republic of the Congo |
| 4WA-4WZ | Democratic Republic of Timor-Leste (WRC-03) |
| OUA-OZZ | Denmark |
| XPA-XPZ | Denmark |
| 5PA-5QZ | Denmark |
| J2A-J2Z | Djibouti (Republic of) |
| J7A-J7Z | Dominica (Commonwealth of) |
| HIA-HIZ | Dominican Republic |
| HCA-HDZ | Ecuador |
| SSA-SSM | Egypt (Arab Republic of) |
| SUA-SUZ | Egypt (Arab Republic of) |
| 6AA-6BZ | Egypt (Arab Republic of) |
| HUA-HUZ | El Salvador (Republic of) |
| YSA-YSZ | El Salvador (Republic of) |
| 3CA-3CZ | Equatorial Guinea (Republic of) |
| E3A-E3Z | Eritrea |
| ESA-ESZ | Estonia (Republic of) |
| ETA-ETZ | Ethiopia (Federal Democratic Republic of) |
| 9EA-9FZ | Ethiopia (Federal Democratic Republic of) |
| 3DN-3DZ | Fiji (Republic of) |
| OFA-OJZ | Finland |
| FAA-FZZ | France |
| HWA-HYZ | France |
| THA-THZ | France |
| TKA-TKZ | France |
| TMA-TMZ | France |
| TOA-TQZ | France |
| TVA-TXZ | France |
| TRA-TRZ | Gabonese Republic |
| C5A-C5Z | Gambia (Republic of the) |
| 4LA-4LZ | Georgia (Republic of) |
| DAA-DRZ | Germany (Federal Republic of) |
| Y2A-Y9Z | Germany (Federal Republic of) |
| 9GA-9GZ | Ghana |
| J4A-J4Z | Greece |
| SVA-SZZ | Greece |
| J3A-J3Z | Grenada |
| TDA-TDZ | Guatemala (Republic of) |
| TGA-TGZ | Guatemala (Republic of) |
| 3XA-3XZ | Guinea (Republic of) |
| J5A-J5Z | Guinea-Bissau (Republic of) |
| 8RA-8RZ | Guyana |
| HHA-HHZ | Haiti (Republic of) |
| 4VA-4VZ | Haiti (Republic of) |
| HQA-HRZ | Honduras (Republic of) |
| HAA-HAZ | Hungary (Republic of) |
| HGA-HGZ | Hungary (Republic of) |
| TFA-TFZ | Iceland |
| ATA-AWZ | India (Republic of) |
| VTA-VWZ | India (Republic of) |
| 8TA-8YZ | India (Republic of) |
| JZA-JZZ | Indonesia (Republic of) |
| PKA-POZ | Indonesia (Republic of) |
| YBA-YHZ | Indonesia (Republic of) |
| 7AA-7IZ | Indonesia (Republic of) |
| 8AA-8IZ | Indonesia (Republic of) |
| * 4YA-4YZ | International Civil Aviation Organization |
| EPA-EQZ | Iran (Islamic Republic of) |
| 9BA-9DZ | Iran (Islamic Republic of) |
| HNA-HNZ | Iraq (Republic of) |
| YIA-YIZ | Iraq (Republic of) |
| EIA-EJZ | Ireland |
| 4XA-4XZ | Israel (State of) |
| 4ZA-4ZZ | Israel (State of) |
| IAA-IZZ | Italy |
| 6YA-6YZ | Jamaica |
| JAA-JSZ | Japan |
| 7JA-7NZ | Japan |
| 8JA-8NZ | Japan |
| JYA-JYZ | Jordan (Hashemite Kingdom of) |
| UNA-UQZ | Kazakhstan (Republic of) |
| 5YA-5ZZ | Kenya (Republic of) |
| 3DA-3DM | Kingdom of Eswatini |
| T3A-T3Z | Kiribati (Republic of) |
| DSA-DTZ | Korea (Republic of) |
| D7A-D9Z | Korea (Republic of) |
| HLA-HLZ | Korea (Republic of) |
| 6KA-6NZ | Korea (Republic of) |
| Z6A-Z6Z | Kosovo (Republic of) |
| 9KA-9KZ | Kuwait (State of) |
| EXA-EXZ | Kyrgyz Republic |
| XWA-XWZ | Lao People’s Democratic Republic |
| YLA-YLZ | Latvia (Republic of) |
| ODA-ODZ | Lebanon |
| 7PA-7PZ | Lesotho (Kingdom of) |
| A8A-A8Z | Liberia (Republic of) |
| D5A-D5Z | Liberia (Republic of) |
| ELA-ELZ | Liberia (Republic of) |
| 5LA-5MZ | Liberia (Republic of) |
| 6ZA-6ZZ | Liberia (Republic of) |
| 5AA-5AZ | Libya (Socialist People’s Libyan Arab Jamahiriya) |
| LYA-LYZ | Lithuania (Republic of) |
| LXA-LXZ | Luxembourg |
| 5RA-5SZ | Madagascar (Republic of) |
| 6XA-6XZ | Madagascar (Republic of) |
| 7QA-7QZ | Malawi |
| 9MA-9MZ | Malaysia |
| 9WA-9WZ | Malaysia |
| 8QA-8QZ | Maldives (Republic of) |
| TZA-TZZ | Mali (Republic of) |
| 9HA-9HZ | Malta |
| V7A-V7Z | Marshall Islands (Republic of the) |
| 5TA-5TZ | Mauritania (Islamic Republic of) |
| 3BA-3BZ | Mauritius (Republic of) |
| XAA-XIZ | Mexico |
| 4AA-4CZ | Mexico |
| 6DA-6JZ | Mexico |
| V6A-V6Z | Micronesia (Federated States of) |
| ERA-ERZ | Moldova (Republic of) |
| 3AA-3AZ | Monaco (Principality of) |
| JTA-JVZ | Mongolia |
| 4OA-4OZ | Montenegro (Republic of) (WRC-07) |
| CNA-CNZ | Morocco (Kingdom of) |
| 5CA-5GZ | Morocco (Kingdom of) |
| C8A-C9Z | Mozambique (Republic of) |
| XYA-XZZ | Myanmar (Union of) |
| V5A-V5Z | Namibia (Republic of) |
| C2A-C2Z | Nauru (Republic of) |
| 9NA-9NZ | Nepal |
| PAA-PIZ | Netherlands (Kingdom of the) |
| P4A-P4Z | Netherlands (Kingdom of the) – Aruba |
| PJA-PJZ | Netherlands (Kingdom of the) – Netherlands Caribbean |
| ZKA-ZMZ | New Zealand |
| E5A-E5Z | New Zealand – Cook Islands (WRC-07) |
| E6A-E6Z | New Zealand – Niue |
| HTA-HTZ | Nicaragua |
| H6A-H7Z | Nicaragua |
| YNA-YNZ | Nicaragua |
| 5UA-5UZ | Niger (Republic of the) |
| 5NA-5OZ | Nigeria (Federal Republic of) |
| Z3A-Z3Z | North Macedonia (Republic of) |
| JWA-JXZ | Norway |
| LAA-LNZ | Norway |
| 3YA-3YZ | Norway |
| A4A-A4Z | Oman (Sultanate of) |
| APA-ASZ | Pakistan (Islamic Republic of) |
| 6PA-6SZ | Pakistan (Islamic Republic of) |
| T8A-T8Z | Palau (Republic of) |
| ** E4A-E4Z | Palestinian Authority |
| HOA-HPZ | Panama (Republic of) |
| H3A-H3Z | Panama (Republic of) |
| H8A-H9Z | Panama (Republic of) |
| 3EA-3FZ | Panama (Republic of) |
| P2A-P2Z | Papua New Guinea |
| ZPA-ZPZ | Paraguay (Republic of) |
| OAA-OCZ | Peru |
| 4TA-4TZ | Peru |
| DUA-DZZ | Philippines (Republic of the) |
| 4DA-4IZ | Philippines (Republic of the) |
| HFA-HFZ | Poland (Republic of) |
| SNA-SRZ | Poland (Republic of) |
| 3ZA-3ZZ | Poland (Republic of) |
| CQA-CUZ | Portugal |
| A7A-A7Z | Qatar (State of) |
| YOA-YRZ | Romania |
| RAA-RZZ | Russian Federation |
| UAA-UIZ | Russian Federation |
| 9XA-9XZ | Rwandese Republic |
| V4A-V4Z | Saint Kitts and Nevis |
| J6A-J6Z | Saint Lucia |
| J8A-J8Z | Saint Vincent and the Grenadines |
| 5WA-5WZ | Samoa (Independent State of) |
| T7A-T7Z | San Marino (Republic of) |
| S9A-S9Z | Sao Tome and Principe (Democratic Republic of) |
| HZA-HZZ | Saudi Arabia (Kingdom of) |
| 7ZA-7ZZ | Saudi Arabia (Kingdom of) |
| 8ZA-8ZZ | Saudi Arabia (Kingdom of) |
| 6VA-6WZ | Senegal (Republic of) |
| YTA-YUZ | Serbia (Republic of) (WRC-07) |
| S7A-S7Z | Seychelles (Republic of) |
| 9LA-9LZ | Sierra Leone |
| S6A-S6Z | Singapore (Republic of) |
| 9VA-9VZ | Singapore (Republic of) |
| OMA-OMZ | Slovak Republic |
| S5A-S5Z | Slovenia (Republic of) |
| H4A-H4Z | Solomon Islands |
| T5A-T5Z | Somali Democratic Republic |
| 6OA-6OZ | Somali Democratic Republic |
| S8A-S8Z | South Africa (Republic of) |
| ZRA-ZUZ | South Africa (Republic of) |
| Z8A-Z8Z | South Sudan (Republic of) |
| AMA-AOZ | Spain |
| EAA-EHZ | Spain |
| 4PA-4SZ | Sri Lanka (Democratic Socialist Republic of) |
| SSN-STZ | Sudan (Republic of the) |
| 6TA-6UZ | Sudan (Republic of the) |
| PZA-PZZ | Suriname (Republic of) |
| SAA-SMZ | Sweden |
| 7SA-7SZ | Sweden |
| 8SA-8SZ | Sweden |
| HBA-HBZ | Switzerland (Confederation of) |
| HEA-HEZ | Switzerland (Confederation of) |
| YKA-YKZ | Syrian Arab Republic |
| 6CA-6CZ | Syrian Arab Republic |
| EYA-EYZ | Tajikistan (Republic of) |
| 5HA-5IZ | Tanzania (United Republic of) |
| E2A-E2Z | Thailand |
| HSA-HSZ | Thailand |
| 5VA-5VZ | Togolese Republic |
| A3A-A3Z | Tonga (Kingdom of) |
| 9YA-9ZZ | Trinidad and Tobago |
| TSA-TSZ | Tunisia |
| 3VA-3VZ | Tunisia |
| TAA-TCZ | Turkey |
| YMA-YMZ | Turkey |
| EZA-EZZ | Turkmenistan |
| T2A-T2Z | Tuvalu |
| 5XA-5XZ | Uganda (Republic of) |
| EMA-EOZ | Ukraine |
| URA-UZZ | Ukraine |
| A6A-A6Z | United Arab Emirates |
| GAA-GZZ | United Kingdom of Great Britain and Northern Ireland |
| MAA-MZZ | United Kingdom of Great Britain and Northern Ireland |
| VPA-VQZ | United Kingdom of Great Britain and Northern Ireland |
| VSA-VSZ | United Kingdom of Great Britain and Northern Ireland |
| ZBA-ZJZ | United Kingdom of Great Britain and Northern Ireland |
| ZNA-ZOZ | United Kingdom of Great Britain and Northern Ireland |
| ZQA-ZQZ | United Kingdom of Great Britain and Northern Ireland |
| 2AA-2ZZ | United Kingdom of Great Britain and Northern Ireland |
| * 4UA-4UZ | United Nations |
| AAA-ALZ | United States of America |
| KAA-KZZ | United States of America |
| NAA-NZZ | United States of America |
| WAA-WZZ | United States of America |
| CVA-CXZ | Uruguay (Eastern Republic of) |
| UJA-UMZ | Uzbekistan (Republic of) |
| YJA-YJZ | Vanuatu (Republic of) |
| HVA-HVZ | Vatican City State |
| YVA-YYZ | Venezuela (Republic of) |
| 4MA-4MZ | Venezuela (Republic of) |
| XVA-XVZ | Viet Nam (Socialist Republic of) |
| 3WA-3WZ | Viet Nam (Socialist Republic of) |
| * C7A-C7Z | World Meteorological Organization |
| 7OA-7OZ | Yemen (Republic of) |
| 9IA-9JZ | Zambia (Republic of) |
| Z2A-Z2Z | Zimbabwe (Republic of) |
* Series allocated to an international organization.
** In response to Resolution 99 (Minneapolis, 1998) of the Plenipotentiary Conference (WRC-2000)
4H1FOC Amateur Radio Station 