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A. GEOGRAPHICAL GROUPINGS
| Grouping and constituent countries or areas | Numerical code |
| AFRICA | 002 |
| Eastern Africa | 014 |
| British Indian Ocean Territory | 086 |
| Burundi | 108 |
| Comoros | 174 |
| Djibouti | 262 |
| Ethiopia | 230 |
| Kenya | 404 |
| Madagascar | 450 |
| Malawi | 454 |
| Mauritius | 480 |
| Mozambique | 508 |
| Réunion | 638 |
| Rwanda | 646 |
| Seychelles | 690 |
| Somalla | 706 |
| Uganda | 800 |
| United Republic of Tanzania | 834 |
| Zambia | 894 |
| Zimbabwe | 716 |
| Middle Africa | 017 |
| Angola | 024 |
| Central African Republic | 140 |
| Chad | 148 |
| Congo | 178 |
| Equatorial Guinea | 226 |
| Gabon | 266 |
| Sao Tome and Principe | 678 |
| United Republic of Cameroon | 120 |
| Zaire | 180 |
| Northern Africa | 015 |
| Algeria | 012 |
| Egypt | 818 |
| Libyan Arab Jamahiriya | 434 |
| Morocco | 504 |
| Sudan | 736 |
| Tunisia | 788 |
| Western Sahara | 732 |
| Southern Africa | 018 |
| Botswana | 072 |
| Lesotho | 426 |
| Namibia | 516 |
| South Africa | 710 |
| Swaziland | 748 |
| Western Africa | 011 |
| Benin | 204 |
| Cape Verde | 132 |
| Gambia | 270 |
| Ghana | 288 |
| Guinea | 324 |
| Guinea-Bissau | 624 |
| Ivory Coast | 384 |
| Liberia | 430 |
| Mali | 466 |
| Mauritania | 478 |
| Niger | 562 |
| Nigeria | 566 |
| St. Helena | 654 |
| Senegal | 686 |
| Sierra Leone | 694 |
| Togo | 768 |
| Upper Volta | 854 |
| AMERICAS | 019 |
| North America | 003 |
| Caribbean | 029 |
| Anguilla | 660 |
| Antigua and Barbuda | 028 |
| Bahamas | 044 |
| Barbados | 052 |
| British Virgin Islands | 092 |
| Cayman Islands | 136 |
| Cuba | 192 |
| Dominica | 212 |
| Dominican Republic | 214 |
| Grenada | 308 |
| Guadeloupe | 312 |
| Haiti | 332 |
| Jamaica | 388 |
| Martinique | 474 |
| Montserrat | 500 |
| Netherlands Antilles | 532 |
| Puerto Rico | 830 |
| St. Kitts-Nevis | 659 |
| Saint Lucia | 662 |
| Saint-Vincent-and-the-Grenadines | 670 |
| Trinidad and Tobago | 780 |
| Turks and Caicos Islands | 796 |
| United States Virgin Islands | 850 |
| Central America | 013 |
| Belize | 084 |
| Costa Rica | 188 |
| El Salvador | 222 |
| Guatemala | 320 |
| Honduras | 340 |
| Mexico | 484 |
| Nicaragua | 558 |
| Panama | 591 |
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