| Sub | ISO 3166 | Country | Sub Continent |
|---|---|---|---|
| 3B | BN | Brunei Darussalam | South East Asia |
| 3B | CN | China | South East Asia |
| 3B | FM | Micronesia, Federated States of | South East Asia |
| 3B | GU | Guam | South East Asia |
| 3B | HK | Hong Kong | South East Asia |
| 3B | ID | Indonesia | South East Asia |
| 3B | KG | Kyrgyzstan | South East Asia |
| 3B | KH | Cambodia | South East Asia |
| 3B | KZ | Kazakhstan | South East Asia |
| 3B | LA | Lao People's Democratic Republic | South East Asia |
| 3B | MH | Marshall Islands | South East Asia |
| 3B | MM | Myanmar | South East Asia |
| 3B | MN | Mongolia | South East Asia |
| 3B | MO | Macao | South East Asia |
| 3B | MY | Malaysia | South East Asia |
| 3B | PG | Papua New Guinea | South East Asia |
| 3B | PH | Philippines | South East Asia |
| 3B | PW | Palau | South East Asia |
| 3B | RU | Russia (Asia) | South East Asia |
| 3B | SG | Singapore | South East Asia |
| 3B | TH | Thailand | South East Asia |
| 3B | TJ | Tajikistan | South East Asia |
| 3B | TM | Turkmenistan | South East Asia |
| 3B | TW | Taiwan, Province of China | South East Asia |
| 3B | UM | United States Minor Outlying Islands | South East Asia |
| 3B | UZ | Uzbekistan | South East Asia |
| 3B | VN | Vietnam | South East Asia |