While there is a general geographic grouping to the zones, many exceptions exist for various political and historical reasons. Thus, the geographical indicators below are approximations only.
Originally larger countries, such as the United Kingdom or France, were assigned two-digit codes (to compensate for their usually longer domestic numbers) and small countries, such as Iceland, were assigned three-digit codes; however, since the 1980s, all new assignments have been three-digit regardless of countries’ sizes.
| Country or Service | Code |
| Abkhazia | &0000000000078400.000000+7 840, +7 940 |
| Afghanistan | &0000000000093000.000000+93 |
| Albania | &0000000000035500.000000+355 |
| Algeria | &0000000000021300.000000+213 |
| American Samoa | &0000000000016840.000000+1 684[2] |
| Andorra | &0000000000037600.000000+376 |
| Angola | &0000000000024400.000000+244 |
| Anguilla | &0000000000012640.000000+1 264[2] |
| Antigua and Barbuda | &0000000000012680.000000+1 268[2] |
| Argentina | &0000000000054000.000000+54 |
| Armenia | &0000000000037400.000000+374 |
| Aruba | &0000000000029700.000000+297 |
| Ascension | &0000000000024700.000000+247 |
| Australia | &0000000000061000.000000+61 |
| Australian External Territories | &0000000000067200.000000+672 |
| Austria | &0000000000043000.000000+43 |
| Azerbaijan | &0000000000099400.000000+994 |
| Bahamas | &0000000000012420.000000+1 242[2] |
| Bahrain | &0000000000097300.000000+973 |
| Bangladesh | &0000000000088000.000000+880 |
| Barbados | &0000000000012460.000000+1 246[2] |
| Barbuda | &0000000000012680.000000+1 268[2] |
| Belarus | &0000000000037500.000000+375 |
| Belgium | &0000000000032000.000000+32 |
| Belize | &0000000000050100.000000+501 |
| Benin | &0000000000022900.000000+229 |
| Bermuda | &0000000000014410.000000+1 441[2] |
| Bhutan | &0000000000097500.000000+975 |
| Bolivia | &0000000000059100.000000+591 |
| Bosnia and Herzegovina | &0000000000038700.000000+387 |
| Botswana | &0000000000026700.000000+267 |
| Brazil | &0000000000055000.000000+55 |
| British Indian Ocean Territory | &0000000000024600.000000+246 |
| British Virgin Islands | &0000000000012840.000000+1 284[2] |
| Brunei | &0000000000067300.000000+673 |
| Bulgaria | &0000000000035900.000000+359 |
| Burkina Faso | &0000000000022600.000000+226 |
| Burundi | &0000000000025700.000000+257 |
| Cambodia | &0000000000085500.000000+855 |
| Cameroon | &0000000000023700.000000+237 |
| Canada | &0000000000010000.000000+1[2] |
| Cape Verde | &0000000000023800.000000+238 |
| Cayman Islands | &0000000000013450.000000+1 345[2] |
| Central African Republic | &0000000000023600.000000+236 |
| Chad | &0000000000023500.000000+235 |
| Chatham Island (New Zealand) | &0000000000064000.000000+64 |
| Chile | &0000000000056000.000000+56 |
| China | &0000000000086000.000000+86 |
| Christmas Island | &0000000000061800.000000+61 |
| Cocos-Keeling Islands | &0000000000061000.000000+61 |
| Colombia | &0000000000057000.000000+57 |
| Comoros | &0000000000026900.000000+269 |
| Congo | &0000000000024200.000000+242 |
| Congo - Brazzaville | &0000000000024200.000000+242 |
| Congo, Dem. Rep. of (Zaire) | &0000000000024300.000000+243 |
| Congo - Kinshasa | &0000000000024300.000000+243 |
| Cook Islands | &0000000000068200.000000+682 |
| Costa Rica | &0000000000050600.000000+506 |
| Ivory Coast | &0000000000022500.000000+225 |
| Croatia | &0000000000038500.000000+385 |
| Cuba | &0000000000053000.000000+53 |
| Cuba (Guantanamo Bay) | &0000000000053990.000000+5399 |
| Curaçao | &0000000000059900.000000+599 |
| Cyprus | &0000000000035700.000000+357 |
| Czech Republic | &0000000000042000.000000+420 |
| Denmark | &0000000000045000.000000+45 |
| Diego Garcia | &0000000000024600.000000+246 |
| Djibouti | &0000000000025300.000000+253 |
| Dominica | &0000000000017670.000000+1 767[2] |
| Dominican Republic | &0000000000018090.000000+1 809, +1 829 and +1 849[2] |
| East Timor | &0000000000067000.000000+670 |
| Easter Island | &0000000000056000.000000+56 |
| Ecuador | &0000000000059300.000000+593 |
| Egypt | &0000000000020000.000000+20 |
| El Salvador | &0000000000050300.000000+503 |
| Ellipso (Mobile Satellite service) | &0000000000088120.000000+8812, +8813 |
| EMSAT (Mobile Satellite service) | &0000000000088213.000000+88213 |
| Equatorial Guinea | &0000000000024000.000000+240 |
| Eritrea | &0000000000029100.000000+291 |
| Estonia | &0000000000037200.000000+372 |
| Ethiopia | &0000000000025100.000000+251 |
| Falkland Islands | &0000000000050000.000000+500 |
| Faroe Islands | &0000000000029800.000000+298 |
| Fiji | &0000000000067900.000000+679 |
| Finland | &0000000000035800.000000+358 |
| France | &0000000000033000.000000+33 |
| French Antilles | &0000000000059600.000000+596 |
| French Guiana | &0000000000059400.000000+594 |
| French Polynesia | &0000000000068900.000000+689 |
| Gabon | &0000000000024100.000000+241 |
| Gambia | &0000000000022000.000000+220 |
| Georgia | &0000000000099500.000000+995 |
| Germany | &0000000000049000.000000+49 |
| Ghana | &0000000000023300.000000+233 |
| Gibraltar | &0000000000035000.000000+350 |
| Global Mobile Satellite System (GMSS) | &0000000000088100.000000+881 |
| Globalstar (Mobile Satellite Service) | &0000000000088180.000000+8818, +8819 |
| Greece | &0000000000030000.000000+30 |
| Greenland | &0000000000029900.000000+299 |
| Grenada | &0000000000014730.000000+1 473[2] |
| Guadeloupe | &0000000000059000.000000+590 |
| Guam | &0000000000016710.000000+1 671[2] |
| Guantanamo Bay | &0000000000053990.000000+5399 |
| Guatemala | &0000000000050200.000000+502 |
| Guinea | &0000000000022400.000000+224 |
| Guinea-Bissau | &0000000000024500.000000+245 |
| Guyana | &0000000000059200.000000+592 |
| Haiti | &0000000000050900.000000+509 |
| Honduras | &0000000000050400.000000+504 |
| Hong Kong SAR China | &0000000000085200.000000+852 |
| Hungary | &0000000000036000.000000+36 |
| Iceland | &0000000000035400.000000+354 |
| ICO Global (Mobile Satellite Service) | &0000000000088100.000000+8810, +8811 |
| India | &0000000000091000.000000+91 |
| Indonesia | &0000000000062000.000000+62 |
| Inmarsat SNAC | &0000000000087000.000000+870 |
| International Freephone Service | &0000000000080000.000000+800 |
| International Shared Cost Service (ISCS) | &0000000000080800.000000+808 |
| Iran | &0000000000098000.000000+98 |
| Iraq | &0000000000096400.000000+964 |
| Ireland | &0000000000035300.000000+353 |
| Iridium (Mobile Satellite service) | &0000000000088160.000000+8816, +8817 |
| Israel | &0000000000097200.000000+972 |
| Italy | &0000000000039000.000000+39 |
| Jamaica | &0000000000018760.000000+1 876[2] |
| Japan | &0000000000081000.000000+81 |
| Jordan | &0000000000096200.000000+962 |
| Kazakhstan | &0000000000076000.000000+7 7[3] |
| Kenya | &0000000000025400.000000+254 |
| Kiribati | &0000000000068600.000000+686 |
| North Korea | &0000000000085000.000000+850 |
| South Korea | &0000000000082000.000000+82 |
| Kuwait | &0000000000096500.000000+965 |
| Kyrgyzstan | &0000000000099600.000000+996 |
| Laos | &0000000000085600.000000+856 |
| Latvia | &0000000000037100.000000+371 |
| Lebanon | &0000000000096100.000000+961 |
| Lesotho | &0000000000026600.000000+266 |
| Liberia | &0000000000023100.000000+231 |
| Libya | &0000000000021800.000000+218 |
| Liechtenstein | &0000000000042300.000000+423 |
| Lithuania | &0000000000037000.000000+370 |
| Luxembourg | &0000000000035200.000000+352 |
| Macau SAR China | &0000000000085300.000000+853 |
| Macedonia | &0000000000038900.000000+389 |
| Madagascar | &0000000000026100.000000+261 |
| Malawi | &0000000000026500.000000+265 |
| Malaysia | &0000000000060000.000000+60 |
| Maldives | &0000000000096000.000000+960 |
| Mali | &0000000000022300.000000+223 |
| Malta | &0000000000035600.000000+356 |
| Marshall Islands | &0000000000069200.000000+692 |
| Martinique | &0000000000059600.000000+596 |
| Mauritania | &0000000000022200.000000+222 |
| Mauritius | &0000000000023000.000000+230 |
| Mayotte | &0000000000026200.000000+262 |
| Mexico | &0000000000052000.000000+52 |
| Micronesia | &0000000000069100.000000+691 |
| Midway Island | &0000000000018080.000000+1 808[2] |
| Moldova | &0000000000037300.000000+373 |
| Monaco | &0000000000037700.000000+377 |
| Mongolia | &0000000000097600.000000+976 |
| Montenegro | &0000000000038200.000000+382 |
| Montserrat | &0000000000016640.000000+1 664[2] |
| Morocco | &0000000000021200.000000+212 |
| Mozambique | &0000000000025800.000000+258 |
| Myanmar | &0000000000095000.000000+95 |
| Namibia | &0000000000026400.000000+264 |
| Nauru | &0000000000067400.000000+674 |
| Nepal | &0000000000097700.000000+977 |
| Netherlands | &0000000000031000.000000+31 |
| Netherlands Antilles[4] | &0000000000059900.000000+599 |
| Nevis | &0000000000018690.000000+1 869[2] |
| New Caledonia | &0000000000068700.000000+687 |
| New Zealand | &0000000000064000.000000+64 |
| Nicaragua | &0000000000050500.000000+505 |
| Niger | &0000000000022700.000000+227 |
| Nigeria | &0000000000023400.000000+234 |
| Niue | &0000000000068300.000000+683 |
| Norfolk Island | &0000000000067200.000000+672 |
| Northern Mariana Islands | &0000000000016700.000000+1 670[2] |
| Norway | &0000000000047000.000000+47 |
| Oman | &0000000000096800.000000+968 |
| Pakistan | &0000000000092000.000000+92 |
| Palau | &0000000000068000.000000+680 |
| Palestinian Territory | &0000000000097000.000000+970 |
| Panama | &0000000000050700.000000+507 |
| Papua New Guinea | &0000000000067500.000000+675 |
| Paraguay | &0000000000059500.000000+595 |
| Peru | &0000000000051000.000000+51 |
| Philippines | &0000000000063000.000000+63 |
| Poland | &0000000000048000.000000+48 |
| Portugal | &0000000000035100.000000+351 |
| Puerto Rico | &0000000000017870.000000+1 787, +1 939[2] |
| Qatar | &0000000000097400.000000+974 |
| Réunion | &0000000000026200.000000+262 |
| Romania | &0000000000040000.000000+40 |
| Russia | &0000000000070000.000000+7[3] |
| Rwanda | &0000000000025000.000000+250 |
| Saint Barthélemy | &0000000000059000.000000+590 |
| Saint Helena | &0000000000029000.000000+290 |
| Saint Kitts and Nevis | &0000000000018690.000000+1 869[2] |
| Saint Lucia | &0000000000017580.000000+1 758[2] |
| Saint Martin | &0000000000059000.000000+590 |
| Saint Pierre and Miquelon | &0000000000050800.000000+508 |
| Saint Vincent and the Grenadines | &0000000000017840.000000+1 784[2] |
| Samoa | &0000000000068500.000000+685 |
| San Marino | &0000000000037800.000000+378 |
| São Tomé and Príncipe | &0000000000023900.000000+239 |
| Saudi Arabia | &0000000000096600.000000+966 |
| Senegal | &0000000000022100.000000+221 |
| Serbia | &0000000000038100.000000+381 |
| Seychelles | &0000000000024800.000000+248 |
| Sierra Leone | &0000000000023200.000000+232 |
| Singapore | &0000000000065000.000000+65 |
| Sint Maarten (from May 31, 2010)[5][1] | &0000000000017210.000000+1 721[2] |
| Slovakia | &0000000000042100.000000+421 |
| Slovenia | &0000000000038600.000000+386 |
| Solomon Islands | &0000000000067700.000000+677 |
| Somalia | &0000000000025200.000000+252 |
| South Africa | &0000000000027000.000000+27 |
| South Georgia and the South Sandwich Islands | &0000000000050000.000000+500 |
| Spain | &0000000000034000.000000+34 |
| Sri Lanka | &0000000000094000.000000+94 |
| Sudan | &0000000000024900.000000+249 |
| Suriname | &0000000000059700.000000+597 |
| Swaziland | &0000000000026800.000000+268 |
| Sweden | &0000000000046000.000000+46 |
| Switzerland | &0000000000041000.000000+41 |
| Syria | &0000000000096300.000000+963 |
| Taiwan | &0000000000088600.000000+886 |
| Tajikistan | &0000000000099200.000000+992 |
| Tanzania | &0000000000025500.000000+255 |
| Thailand | &0000000000066000.000000+66 |
| Thuraya (Mobile Satellite service) | &0000000000088216.000000+88216 |
| Timor Leste | &0000000000067000.000000+670 |
| Togo | &0000000000022800.000000+228 |
| Tokelau | &0000000000069000.000000+690 |
| Tonga | &0000000000067600.000000+676 |
| Trinidad and Tobago | &0000000000018680.000000+1 868[2] |
| Tunisia | &0000000000021600.000000+216 |
| Turkey | &0000000000090000.000000+90 |
| Turkmenistan | &0000000000099300.000000+993 |
| Turks and Caicos Islands | &0000000000016490.000000+1 649[2] |
| Tuvalu | &0000000000068800.000000+688 |
| Uganda | &0000000000025600.000000+256 |
| Ukraine | &0000000000038000.000000+380 |
| United Arab Emirates | &0000000000097100.000000+971 |
| United Kingdom | &0000000000044000.000000+44 |
| United States | &0000000000010000.000000+1[2] |
| Universal Personal Telecommunications (UPT) | &0000000000087800.000000+878 |
| Uruguay | &0000000000059800.000000+598 |
| U.S. Virgin Islands | &0000000000013400.000000+1 340[2] |
| Uzbekistan | &0000000000099800.000000+998 |
| Vanuatu | &0000000000067800.000000+678 |
| Vatican | &0000000000039066.000000+39 066 (assigned +379) |
| Venezuela | &0000000000058000.000000+58 |
| Vietnam | &0000000000084000.000000+84 |
| Wake Island | &0000000000018080.000000+1 808[2] |
| Wallis and Futuna | &0000000000068100.000000+681 |
| Yemen | &0000000000096700.000000+967 |
| Zambia | &0000000000026000.000000+260 |
| Zanzibar | &0000000000025500.000000+255 |
| Zimbabwe | &0000000000026300.000000+263 |