Once you have your TopUp2world mobile calling card, you can call over 200 countries using the dialling codes listed here:

Afghanistan 0093
Albania 00355
Algeria 00213
Andorra 00376
Angola 00244
Anguilla 001264
Antigua and Barbuda 001268
Argentina 0054
Armenia 00374
Aruba 00297
Ascension 00247
Australia 0061
Austria 0043
Azerbaijan 00994
Bahamas 001242
Bahrain 00973
Bangladesh 00880
Barbados 001246
Belarus 00375
Belgium 0032
Belize 00501
Benin 00229
Bermuda 001441
Bhutan 00975
Bolivia 00591
Bosnia Herzegovina 00387
Botswana 00267
Brazil 0055
Brunei 00673
Bulgaria 00359
Burkina 00226
Burma 0095
Burundi 00257
Cambodia 00855
Cameroon 00237
Canada 001
Cape Verde 00238
Cayman Islands 001345
Central African Republic 00236
Chad 00235
Chile 0056
China 0086
Columbia 0057
Comoros 00269
Congo 00242
Cook Islands 00682
Costa Rica 00506
Croatia 00385
Cuba 0053
Cyprus 00357
Czech Republic 00420
Dem. Rep. of Congo[Zaire] 00242
Denmark 0045
Diego Garcia 00246
Djibouti 00253
Dominica 001767
Dominican Republic 001809
Ecuador 00593
Egypt 0020
El Salvador 00503
England 0044
Equatorial Guinea 00240
Eritrea 00291
Estonia 00372
Ethiopia 00251
Falkland Islands 005
Faroe Islands 00298
Fiji 00679
Finland 00358
France 0033
French Guiana 00594
French Polynesia 00689
Gabon 00241
Gambia 00220
Georgia 00995
Germany 0049
Ghana 00233
Gibralter 00350
Greece 0030
Greenland 00299
Grenada 001473
Guadaloupe 00590
Guam 001671
Guatemala 00502
Guinea 00224
Guinea Bissau 00245
Guyana 00592
Haiti 00509
Honduras 00504
Hong Kong 00852
Hungary 0036
Iceland 00354
India 0091
Indonesia 0062
Iran 0098
Iraq 00964
Ireland 00353
Israel 00972
Italy 0039
Ivory Coast 00225
Jamaica 001876
Japan 0081
Jordan 00962
Kazakhstan 007
Kenya 00254
Kiribati 00686
Kuwait 00965
Kyrgystan 00996
Laos 00856
Latvia 00371
Lebanon 00961
Lesotho 00266
Liberia 00231
Libya 00218
Liechenstein 00423
Lithuania 00370
Luxembourg 00352
Macau [China] 00853
Macedonia 00389
Madagascar 00261
Malawi 00265
Malaysia 0060
Maldives 00960
Mali 00223
Malta 00356
Marshall Islands 00692
Martinique 00596
Mauritiania 00222
Mauritius 00230
Mexico 0052
Micronesia 00691
Moldova 00373
Monaco 00377
Mongolia 00976
Montserrat 001664
Morocco 00212
Mozambique 00258
Myanmar 0095
Namibia 00264
Nauru 00674
Nepal 00977
Netherlands 0031
Netherlands Antilles 00599
New Caledonia 00687
New Zealand 0064
Nicaragua 00505
Niger 00227
Nigeria 00234
Niue 00683
Norfolk Island 00672
North Cyprus 0090
North Korea 00850
Northern Marianas 001670
Norway 0047
Oman 00968
Pakistan 0092
Palau 00680
Panama 00507
Papua New Guinea 00675
Paraguay 00595
Peru 0051
Philppines 0063
Poland 0048
Portugal 00351
Puerto Rico 001787
Qatar 00974
Reunion 00262
Romania 0040
Russian Federation 007
Rwanda 00250
Samoa (United States) 00684
Samoa (Western) 00685
San Marino 00378
Sao Tome and Principe 00239
Saudi Arabia 00966
SenegaL 00221
Seychelles 00248
Sierra Leone 00232
Singapore 0065
Slovakia 00421
Slovenia 00386
Solomon Islands 00677
Somalia 00252
South Africa 0027
South Korea 0082
Spain 0034
Sri Lanka 0094
St. Helena 00290
St. Kitts and Nevis 001869
St. Lucia 001758
St. Pierre and Miquelon 00508
St.Vincent & Grenadines 001784
Sudan 00249
Surinam 00597
Swaziland 00268
Sweden 0046
Switzerland 0041
Syria 00963
Taiwan 00886
Tajikistan 007
Tanzania 00255
Thailand 0066
Togo 00228
Tokelau 00690
Tonga 00676
Trinidad and Tobago 001868
Tunisia 00216
Turkey 0090
Turkmenistan 00993
Turks and Caicos 001649
Tuvalu 00688
Uganda 00256
Ukraine 00380
United Arab Emirates 00971
United Kingdom 0044
Uruguay 00598
USA 001
Uzbekistan 007
Vanuatu 00678
Venezuela 0058
Vietnam 0084
Virgin Islands 001284
Yemen 00967
Yugoslavia 00381
Zaire 00243
Zambia 00260
Zimbabwe 00263
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