ADTRAN HOLDINGS INC revenue for the last year amounted to 891.33 M EUR, the most of which — 713.82 M EUR — came from its highest performing source at the moment, Network Solutions, the year earlier bringing 882.81 M EUR. The greatest contribution to the revenue figure was made by United States — last year it brought ADTRAN HOLDINGS INC 384.62 M EUR, and the year before that — 417.66 M EUR.