Comcast (NASDAQ:CMCSA) and Verizon (NYSE:VZ) top Infonetics Research's "North America Business VoIP Service Leadership Scorecard." Comcast earned a high overall score of 33 out of 35 for hosted VoIP services. Verizon Business earned a high overall score of 32 out of 35 for IP connectivity providers.At the end of 2011, many of the top hosted VoIP service providers had more than 100,000 VoIP and UC seats, while others had fewer than 50,000 seats, signaling further consolidation to come, and likely the shuttering of some businesses.