https://en.wikipedia.org/wiki/ISO_3166-1_alpha-3
WebISO 3166-1 alpha-3 codes are three-letter country codes defined in ISO 3166-1, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), to represent countries, dependent territories, and special areas of geographical interest.They allow a better visual association between the codes and the country names than the two …