| Prefix | Entity | Cont | ITU Allocations | Other Amateur Prefixes | |
|---|---|---|---|---|---|
| J2 | Djibouti | Af |  |
J2 | |
| J3 | Grenada | NA |  |
J3 | |
| J5 | Guinea-Bissau | Af | J5 | ||
| J6 | St Lucia | NA |  |
J6 | |
| J7 | Dominica | NA |  |
J7 | |
| J8 | St Vincent | NA | J8 | ||
| JA | Japan | As |  |
7J-7N, 8J-8N, JA-JS | |
| JD | Minami Torishima | Oc |  |
||
| JD | Ogasawara | As |  |
||
| JT | Mongolia | As |  |
JT-JV | |
| JW | Svalbard | Eu |  |
||
| JX | Jan Mayen | Eu |  |
||
| JY | Jordan | As |  |
JY | |
| K | United States | NA |  |
AA-AL, KA-KZ, NA-NZ, WA-WZ | |
| KG4 | Guantanamo Bay | NA |  |
||
| KH0 | Mariana Is | Oc |  |
AH0, NH0, WH0 | |
| KH1 | Baker & Howland Is | Oc |  |
AH1, NH1, WH1 | |
| KH2 | Guam | Oc |  |
AH2, NH2, WH2 | |
| KH3 | Johnston Is | Oc |  |
AH3, NH3, WH3 | |
| KH4 | Midway Is | Oc |  |
AH4, NH4, WH4 | |
| KH5 | Palmyra, Jarvis Is | Oc |  |
AH5, NH5, WH5 | |
| KH5K | Kingman Reef | Oc |  |
AH5K, NH5K, WH5K | |
| KH6 | Hawaii | Oc |  |
AH6, NH6, WH6, AH7, KH7, NH7, WH7 | |
| KH7K | Kure Is | Oc |  |
AH7K, NH7K, WH7K | |
| KH8 | Am Samoa | Oc |  |
AH8, NH8, WH8 | |
| KH8S | Swainns Island | Oc |  |
KH8SI | |
| KH9 | Wake Is | Oc |  |
AH9, NH9, WH9 | |
| KL | Alaska | NA |  |
AL, NL, WL | |
| KP1 | Navassa Is | NA | NP1, WP1 | ||
| KP2 | Virgin Is | NA |  |
NP2, WP2 | |
| KP4 | Puerto Rico | NA |  |
KP3, NP3, WP3, NP4, WP4 | |
| KP5 | Desecheo Is | NA | NP5, WP5 | ||
| LA | Norway | Eu |  |
3Y, JW-JX, LA-LN | |
| LU | Argentina | SA |  |
AY-AZ, LO-LW, L2-L9 | |
| LX | Luxembourg | Eu |  |
LX | |
| LY | Lithuania | Eu |  |
LY | UP |
| LZ | Bulgaria | Eu |  |
LZ | |
| Prefix: *=deleted countries ; @=likely new countries ITU Allocations: ~=unofficial | |||||