The following alpha-3 codes can be user-assigned: from AAA to AAZ, from QMA to QZZ, from XAA to XZZ, and from ZZA to ZZZ. These code elements are at the disposal of users who need to add further names of countries, territories or other geographical entities to their in-house application of ISO 3166-1, and the ISO 3166/MA will never use them in the updating process of the standard.