| Prefix | Entity | Cont | QSL | ITU Allocations | Other Amateur Prefixes |
|---|---|---|---|---|---|
| OA | Peru | SA |  |
4T, OA-OC | |
| OD | Lebanon | As |  |
OD | |
| OE | Austria | Eu |  |
OE | |
| OH | Finland | Eu |  |
OF-OJ | |
| OH0 | Aland Is | Eu |  |
||
| OJ0 | Market Reef | Eu |  |
||
| OK | Czech Republic | Eu |  |
OK-OL | |
| OM | Slovakia | Eu |  |
OM | |
| ON | Belgium | Eu |  |
ON-OT | |
| OX | Greenland | NA |  |
XP | |
| OY | Faroe Is | Eu |  |
||
| OZ | Denmark | Eu |  |
5P-5Q, OU-OZ, XP | |
| P2 | Papua New Guinea | Oc |  |
P2 | |
| P4 | Aruba | SA |  |
P4 | |
| P5 | No Korea | As |  |
HM, P5-P9 | |
| PA | Netherlands | Eu |  |
PA-PI | PB, PD, PE |
| PJ2 | Neth Antilles | SA |  |
PJ | PJ4, PJ9 |
| PJ5 | St Maarten, Saba, St Eus | NA | PJ6-8 | ||
| PY | Brazil | SA |  |
PP-PY, ZV-ZZ | |
| PY0F | Fernando de Noronha | SA |  |
||
| PY0P | St Peter & St Paul Rocks | SA | |||
| PY0T | Trindade & Martin Vaz Is | SA |  |
||
| PZ | Surinam | SA |  |
PZ | |
| R1FJ | Franz Josef Land | Eu |  |
4K2 | |
| R1MV | Malyj Vysotskij Is | Eu |  |
4J1 | |
| S0 | Western Sahara | Af |  |
S0~ | |
| S2 | Bangladesh | As |  |
S2-S3 | |
| S5 | Slovenia | Eu |  |
S5 | |
| S7 | Seychelles | Af |  |
S7 | |
| S9 | Sao Tome & Principe | Af |  |
S9 | |
| SM | Sweden | Eu |  |
7S, 8S, SA-SM | |
| SP | Poland | Eu |  |
3Z, HF, SN-SR | |
| ST | Sudan | Af |  |
6T-6U, SSN-SSZ, ST | |
| SU | Egypt | Af, As |  |
6A-6B, SSA-SSM, SU | |
| SV | Greece | Eu |  |
J4, SV-SZ | |
| SV5 | Dodecanese | Eu |  |
||
| SV9 | Crete | Eu |  |
||
| SY | Mt Athos | Eu |  |
SV1/A | |
| Prefix: *=deleted countries ; @=likely new countries ITU Allocations: ~=unofficial | |||||