ADTRAN HOLDINGS INC. revenue for the last year amounted to 1.04 B EUR, the most of which — 882.81 M EUR — came from its highest performing source at the moment, Network Solutions, the year earlier bringing 856.62 M EUR. The greatest contribution to the revenue figure was made by United States — last year it brought ADTRAN HOLDINGS INC. 417.66 M EUR, and the year before that — 483.47 M EUR.