| Prefix | Entity | Cont. | QSL card | |
| 141 | HA | Hungary | EU |  |
| 142 | HB | Switzerland | EU |  |
| 143 | HB0 | Liechtenstein | EU |  |
| 144 | HC | Ecuador | SA |  |
| 145 | HC8 | Galapagos Is. | SA |  |
| 146 | HH | Haiti | NA |  |
| 147 | HI | Dominican Republic | NA |  |
| 148 | HK | Colombia | SA |  |
| 149 | HK0 | San Andres & Providencia | NA |  |
| 150 | HK0TU | Malpelo I. | SA |  TNX OT  |
| 151 | HL,DS | Republic of Korea | AS |  |
| 152 | HP | Panama | NA |  |
| 153 | HR | Honduras | NA |  |
| 154 | HS | Thailand | AS |  |
| 155 | HV | Vatican | EU |  |
| 156 | HZ | Saudi Arabia | AS |  |
| 157 | I | Italy | EU |  |
| 158 | IS0,IM0 | Sardinia | EU |  |
| 159 | J2 | Djibouti | AF |  |
| 160 | J3 | Grenada | NA |  |