We also have a product, the Country Codes Collection, which you can preview free of charge on the OBP (where you will also find a decoding table). It contains the codes from Parts 1, 2 and 3 of ISO 3166 in three different formats (.xml, .csv, and .xls) for easy integration into your own systems. You will be notified when changes are made so you can download the latest versions. In this way, you can be sure that your database is always using the most up-to-date information from ISO.