Can You Identify the ISO 3166-1 Alpha-2 Country Codes?

ISO 3166-1 alpha-2 codes are two-letter country codes used to represent countries, dependent territories, and special areas of geographical interest. They are widely used for country code top-level domains and postal codes. The codes were first included in the ISO 3166 standard in 1974. ISO 3166-1 alpha-2 codes are used in the Domain Name System as country code top-level domains, but with a few exceptions. The WIPO coding standard ST.3 is based on ISO 3166-1 alpha-2 codes, but includes a number of additional codes for international intellectual property organizations. The European Commission generally uses ISO 3166-1 alpha-2 codes with two exceptions: EL (not GR) is used to represent Greece, and UK (not GB) is used to represent the United Kingdom. The United Nations uses a combination of ISO 3166-1 alpha-2 and alpha-3 codes, along with codes that pre-date the creation of ISO 3166, for international vehicle registration codes. IETF language tags are partially derived from ISO 3166-1 alpha-2 codes. There are 249 officially assigned ISO 3166-1 alpha-2 codes, with some codes designated as user-assigned and others reserved. The reserved codes include exceptional reservations, transitional reservations, indeterminate reservations, and codes currently agreed not to use. A number of alpha-2 codes have also been deleted from ISO 3166-1. The codes are used in different environments and are also part of other standards, but in some cases, they are not perfectly implemented.