The table below shows the ISO 3166-1 country codes used by the registration system. ISO 3166-1 is part of the ISO 3166 standard published by the International Organization for Standardization (ISO).
| Code | Country Name |
|---|---|
| AFG: | Afghanistan |
| ALA: | Åland Islands |
| ALB: | Albania |
| DZA: | Algeria |
| ASM: | American Samoa |
| AND: | Andorra |
| AGO: | Angola |
| AIA: | Anguilla |
| ATA: | Antarctica |
| ATG: | Antigua and Barbuda |
| ARG: | Argentina |
| ARM: | Armenia |
| ABW: | Aruba |
| AUS: | Australia |
| AUT: | Austria |
| AZE: | Azerbaijan |
| BHS: | Bahamas |
| BHR: | Bahrain |
| BGD: | Bangladesh |
| BRB: | Barbados |
| BLR: | Belarus |
| BEL: | Belgium |
| BLZ: | Belize |
| BEN: | Benin |
| BMU: | Bermuda |
| BTN: | Bhutan |
| BOL: | Bolivia (Plurinational State of) |
| BES: | Bonaire, Sint Eustatius and Saba |
| BIH: | Bosnia and Herzegovina |
| BWA: | Botswana |
| BVT: | Bouvet Island |
| BRA: | Brazil |
| IOT: | British Indian Ocean Territory |
| BRN: | Brunei Darussalam |
| BGR: | Bulgaria |
| BFA: | Burkina Faso |
| BDI: | Burundi |
| CPV: | Cabo Verde |
| KHM: | Cambodia |
| CMR: | Cameroon |
| CAN: | Canada |
| CYM: | Cayman Islands |
| CAF: | Central African Republic |
| TCD: | Chad |
| CHL: | Chile |
| CHN: | China |
| CXR: | Christmas Island |
| CCK: | Cocos (Keeling) Islands |
| COL: | Colombia |
| COM: | Comoros |
| COG: | Congo |
| COD: | Congo (the Democratic Republic of the) |
| COK: | Cook Islands |
| CRI: | Costa Rica |
| CIV: | Côte d'Ivoire |
| HRV: | Croatia |
| CUB: | Cuba |
| CUW: | Curaçao |
| CYP: | Cyprus |
| CZE: | Czechia |
| DNK: | Denmark |
| DJI: | Djibouti |
| DMA: | Dominica |
| DOM: | Dominican Republic |
| ECU: | Ecuador |
| EGY: | Egypt |
| SLV: | El Salvador |
| GNQ: | Equatorial Guinea |
| ERI: | Eritrea |
| EST: | Estonia |
| SWZ: | Eswatini |
| ETH: | Ethiopia |
| FLK: | Falkland Islands (Malvinas) |
| FRO: | Faroe Islands |
| FJI: | Fiji |
| FIN: | Finland |
| FRA: | France |
| GUF: | French Guiana |
| PYF: | French Polynesia |
| ATF: | French Southern Territories |
| GAB: | Gabon |
| GMB: | Gambia |
| GEO: | Georgia |
| DEU: | Germany |
| GHA: | Ghana |
| GIB: | Gibraltar |
| GRC: | Greece |
| GRL: | Greenland |
| GRD: | Grenada |
| GLP: | Guadeloupe |
| GUM: | Guam |
| GTM: | Guatemala |
| GGY: | Guernsey |
| GIN: | Guinea |
| GNB: | Guinea-Bissau |
| GUY: | Guyana |
| HTI: | Haiti |
| HMD: | Heard Island and McDonald Islands |
| VAT: | Holy See |
| HND: | Honduras |
| HKG: | Hong Kong |
| HUN: | Hungary |
| ISL: | Iceland |
| IND: | India |
| IDN: | Indonesia |
| IRN: | Iran (Islamic Republic of) |
| IRQ: | Iraq |
| IRL: | Ireland |
| IMN: | Isle of Man |
| ISR: | Israel |
| ITA: | Italy |
| JAM: | Jamaica |
| JPN: | Japan |
| JEY: | Jersey |
| JOR: | Jordan |
| KAZ: | Kazakhstan |
| KEN: | Kenya |
| KIR: | Kiribati |
| PRK: | Korea (the Democratic People's Republic of) |
| KOR: | Korea (the Republic of) |
| XKX: | Kosovo |
| KWT: | Kuwait |
| KGZ: | Kyrgyzstan |
| LAO: | Lao People's Democratic Republic |
| LVA: | Latvia |
| LBN: | Lebanon |
| LSO: | Lesotho |
| LBR: | Liberia |
| LBY: | Libya |
| LIE: | Liechtenstein |
| LTU: | Lithuania |
| LUX: | Luxembourg |
| MAC: | Macao |
| MDG: | Madagascar |
| MWI: | Malawi |
| MYS: | Malaysia |
| MDV: | Maldives |
| MLI: | Mali |
| MLT: | Malta |
| MHL: | Marshall Islands |
| MTQ: | Martinique |
| MRT: | Mauritania |
| MUS: | Mauritius |
| MYT: | Mayotte |
| MEX: | Mexico |
| FSM: | Micronesia (Federated States of) |
| MDA: | Moldova (the Republic of) |
| MCO: | Monaco |
| MNG: | Mongolia |
| MNE: | Montenegro |
| MSR: | Montserrat |
| MAR: | Morocco |
| MOZ: | Mozambique |
| MMR: | Myanmar |
| NAM: | Namibia |
| NRU: | Nauru |
| NPL: | Nepal |
| NLD: | Netherlands |
| NCL: | New Caledonia |
| NZL: | New Zealand |
| NIC: | Nicaragua |
| NER: | Niger |
| NGA: | Nigeria |
| NIU: | Niue |
| NFK: | Norfolk Island |
| MKD: | North Macedonia |
| MNP: | Northern Mariana Islands |
| NOR: | Norway |
| OMN: | Oman |
| PAK: | Pakistan |
| PLW: | Palau |
| PSE: | Palestine, State of |
| PAN: | Panama |
| PNG: | Papua New Guinea |
| PRY: | Paraguay |
| PER: | Peru |
| PHL: | Philippines |
| PCN: | Pitcairn |
| POL: | Poland |
| PRT: | Portugal |
| PRI: | Puerto Rico |
| QAT: | Qatar |
| REU: | Réunion |
| ROU: | Romania |
| RUS: | Russian Federation |
| RWA: | Rwanda |
| BLM: | Saint Barthélemy |
| SHN: | Saint Helena, Ascension and Tristan da Cunha |
| KNA: | Saint Kitts and Nevis |
| LCA: | Saint Lucia |
| MAF: | Saint Martin (French part) |
| SPM: | Saint Pierre and Miquelon |
| VCT: | Saint Vincent and the Grenadines |
| WSM: | Samoa |
| SMR: | San Marino |
| STP: | Sao Tome and Principe |
| SAU: | Saudi Arabia |
| SEN: | Senegal |
| SRB: | Serbia |
| SYC: | Seychelles |
| SLE: | Sierra Leone |
| SGP: | Singapore |
| SXM: | Sint Maarten (Dutch part) |
| SVK: | Slovakia |
| SVN: | Slovenia |
| SLB: | Solomon Islands |
| SOM: | Somalia |
| ZAF: | South Africa |
| SGS: | South Georgia and the South Sandwich Islands |
| SSD: | South Sudan |
| ESP: | Spain |
| LKA: | Sri Lanka |
| SDN: | Sudan |
| SUR: | Suriname |
| SJM: | Svalbard and Jan Mayen |
| SWE: | Sweden |
| CHE: | Switzerland |
| SYR: | Syrian Arab Republic |
| TWN: | Taiwan (Province of China) |
| TJK: | Tajikistan |
| TZA: | Tanzania, United Republic of |
| THA: | Thailand |
| TLS: | Timor-Leste |
| TGO: | Togo |
| TKL: | Tokelau |
| TON: | Tonga |
| TTO: | Trinidad and Tobago |
| TUN: | Tunisia |
| TUR: | Türkiye |
| TKM: | Turkmenistan |
| TCA: | Turks and Caicos Islands |
| TUV: | Tuvalu |
| UGA: | Uganda |
| UKR: | Ukraine |
| ARE: | United Arab Emirates |
| GBR: | United Kingdom of Great Britain and Northern Ireland |
| UMI: | United States Minor Outlying Islands |
| USA: | United States of America |
| URY: | Uruguay |
| UZB: | Uzbekistan |
| VUT: | Vanuatu |
| VEN: | Venezuela (Bolivarian Republic of) |
| VNM: | Viet Nam |
| VGB: | Virgin Islands (British) |
| VIR: | Virgin Islands (U.S.) |
| WLF: | Wallis and Futuna |
| ESH: | Western Sahara |
| YEM: | Yemen |
| ZMB: | Zambia |
| ZWE: | Zimbabwe |