| Pais | Country | Prefijo |
| Bahamas | Bahamas | 1002 |
| Bahrain | Bahrain | 973 |
| Bangladesh | Bangladesh | 880 |
| Barbados | Barbados | 1003 |
| Belgica | Belgium | 32 |
| Belice | Belize | 501 |
| Benin | Benin | 229 |
| Bermuda | Bermuda | 1004 |
| Bhutan | Bhutan | 975 |
| Bosnia y Herzegovina | Bosnia y Herzegovina | 387 |
| Botswana | Botswana | 267 |
| Brasil | Brazil | 55 |
| Brunei | Brunei | 673 |
| Bulgaria | Bulgaria | 359 |
| Burkina Faso | Burkina Faso | 226 |
| Burma | Myanmar | 95 |
| Burundi | Burundi | 257 |