Fillet Origins uses ISO 3166 as the starting point for a system of country codes. Specifically, Fillet Origins uses ISO 3166-1:2020, which is Part 1 of this standard’s three parts, and is the most up-to-date version of this standard.

Fillet Origins uses ISO 3166-1 because it is a widely used international standard. ISO 3166-1, and particularly ISO 3166-1 alpha-2 two-letter country codes, is implemented in other standards such as the following:

1. ISO 9362, “Bank Identifier Codes (BIC)”, also known as “SWIFT codes”
2. ISO 13616, “International Bank Account Number (IBAN)”
3. ISO 4217, “Currency Code”
4. UN/LOCODE, United Nations Code for Trade and Transport Locations, which is implemented by the United Nations Economic Commission for Europe.

Although ISO 3166-1 is not the only standard for country codes, other country codes used by various international organizations tend to closely correspond to ISO 3166-1 codes.

In upcoming releases, Fillet Origins will support additional standards and representations of geographic data.