Spok Holdings, Inc. revenue for the last year amounted to 139.03 M USD, the most of which — 73.14 M USD — came from its highest performing source at the moment, Wireless - Paging, the year earlier bringing 73.32 M USD. The greatest contribution to the revenue figure was made by United States — last year it brought Spok Holdings, Inc. 135.80 M USD, and the year before that — 130.38 M USD.