| Prefix | Entity | Cont | QSL Card |
|---|---|---|---|
| J2 | Djibouti | Af |  |
| J3 | Grenada | NA |  |
| J5 | Guinea-Bissau | Af |  |
| J6 | St Lucia | NA |  |
| J7 | Dominica | NA |  |
| J8 | St Vincent | NA |  |
| JA | Japan | As |  |
| JD | Minami Torishima | Oc |  |
| JD | Ogasawara | As |  |
| JT | Mongolia | As |  |
| JW | Svalbard | Eu |  |
| JX | Jan Mayen | Eu |  |
| JY | Jordan | As |  |
| K | United States | NA |  |
| KG4 | Guantanamo Bay | NA |  |
| KH0 | Mariana Is | Oc |  |
| KH1 | Baker & Howland Is | Oc |  |
| KH2 | Guam | Oc |  |
| KH3 | Johnston Is | Oc |  |
| KH4 | Midway Is | Oc | N7TNL/KH4 QSL Uncollected |
| KH5 | Palmyra, Jarvis Is | Oc |  |
| KH5K | Kingman Reef | Oc |  |
| KH6 | Hawaii | Oc |  |
| KH7K | Kure Is | Oc |  |
| KH8 | Am Samoa | Oc |  |
| KH8S | Swainns Island | Oc | W8S LoTW |
| KH9 | Wake Is | Oc |  |
| KL | Alaska | NA |  |
| KP1 | Navassa Is | NA | KH2S/KP1LoTW |
| KP2 | Virgin Is | NA | KP2BLoTW |
| KP4 | Puerto Rico | NA |  |
| KP5 | Desecheo Is | NA |  |
| LA | Norway | Eu |  |
| LU | Argentina | SA |  |
| LX | Luxembourg | Eu |  |
| LY | Lithuania | Eu |  |
| LZ | Bulgaria | Eu |  |