List of UPU certified designated operators

Historic list of UPU-certified designated operators

Historic list of UPU-certified designated operators since 2004 indicating the year of certification and the level achieved as of 1 June 2018.

List of UPU-certified designated operators with certificates that are currently valid

List of UPU-certified designated operators with certificates that are currently valid indicating the year of certification, the level achieved, the start and end dates of validity as of 1 June 2018.