COGENT COMMUNICATIONS HOLDINGS INC revenue for the last year amounted to 15.98 B MXN, the most of which — 8.81 B MXN — came from its highest performing source at the moment, On-net, the year earlier bringing 8.83 B MXN. The greatest contribution to the revenue figure was made by North America — last year it brought COGENT COMMUNICATIONS HOLDINGS INC 13.63 B MXN, and the year before that — 9.35 B MXN.