ISO 3166-2:AF is the entry for Afghanistan in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.
Currently for Afghanistan, ISO 3166-2 codes are defined for 34 provinces.
Each code consists of two parts, separated by a hyphen. The first part is AF, the ISO 3166-1 alpha-2 code of Afghanistan. The second part is three letters.
Read more about ISO 3166-2:AF: Current Codes, Changes