Occasionally, DX stations may ask you to pass a third-party message to a friend or relative in the States. This is all right as long as the US has signed an official third-party traffic agreement with that particular country, or the third party is a licensed amateur. The traffic must be noncommercial and of a personal, unimportant nature. During an emergency, the US State Department will often work out a special temporary agreement with the country involved. But in normal times, never handle traffic without first making sure it is legally permitted.
| V2 | Antigua/Barbuda | 6Y | Jamaica |
| LO-LW | Argentina | JY | Jordan |
| VK | Australia | EL | Liberia |
| V3 | Belize | V7 | Marshall Islands |
| CP | Bolivia | XA-XI | Mexico |
| T9 | Bosnia-Herzegovina | V6 | Micronesia, Federated States of |
| PP-PY | Brazil | YN | Nicaragua |
| VE, VO, VY | Canada | HO-HP | Panama |
| CA-CE | Chile | ZP | Paraguay |
| HJ-HK | Colombia | OA-OC | Peru |
| D6 | Comoros (Federal Islamic Republic of) | DU-DZ | Philippines |
| TI, TE | Costa Rica | VR6 | Pitcairn Island * |
| CM, CO | Cuba | V4 | St. Kitts/Nevis |
| HI | Dominican Republic | J6 | St. Lucia |
| J7 | Dominica | J8 | St. Vincent and the Grenadines |
| HC-HD | Ecuador | 9L | Sierra Leone |
| YS | El Salvador | ZR-ZU | South Africa |
| C5 | Gambia, The | 3DA | Swaziland |
| 9G | Ghana | 9Y-9Z | Trinidad/Tobago |
| J3 | Grenada | TA-TC | Turkey |
| TG | Guatemala | GB | United Kingdom |
| 8R | Guyana | CV-CX | Uruguay |
| HH | Haiti | YV-YY | Venezuela |
| HQ-HR | Honduras | 4U1ITU | ITU - Geneva |
| 4X, 4Z | Israel | 4U1VIC | VIC - Vienna |
* Since 1970, there has been an informal agreement between the United Kingdom and the US, permitting Pitcairn and US amateurs to exchange messages concerning medical emergencies, urgent need for equipment or supplies, and private or personal matters of island residents.
US licensed amateurs may operate in the following US territories under their FCC license:
Please note that the Region 2 Division of the International Amateur Radio Union (IARU) has recommended that international traffic on the 20 and 15-meter bands be conducted on the following frequencies:
The IARU is the alliance of Amateur Radio societies from around the world; Region 2 comprises member-societies in North, South and Central America, and the Caribbean.
Note: At the end of an exchange of third-party traffic with a station located in a foreign country, an FCC-licensed amateur must transmit the call sign of the foreign station as well as his own call sign.