VoIP Ranking by Subscriber: Q2 2007

This quarter's numbers just begin to show the ongoing turmoil in the VoIP industry, as two companies in our rankings shut down their VoIP service.

by Alex Goldman ISP-Planet Managing Editor [September 18, 2007]

Rank	ISP	Subs. (thousands)	Date & Source
1	Comcast Digital Phone* (circuit switched customers not counted)	3,500	[July 27, 2007] SEC 10-Q
2	Vonage	2,450	[as of June 30, 2007] Fact Sheet
3	Time Warner Digital Phone*	2,335	[August 1, 2007] Trending Schedules [.pdf]
4	Skype (paid VoIP only, customers worldwide, date of this number unknown)	1,800	[July 27, 2005] Press Release
5	CableVision* (cable VoIP under the Optimum Voice brand name)	1,399	[August 8, 2007] SEC 10-Q
6	Charter* (cable VoIP)	700	[August 2, 2007] SEC 10-Q
7	Insight Communications* (cable VoIP)	177	[August 15, 2007] SEC 10-Q
8	Mediacom* (cable VoIP)	144	[August 8, 2007] SEC 10-Q
9	CBeyond	31	[August 7, 2007] SEC 10-Q
10	XO Communications (business VoIP only)	12	[May 10, 2007] SEC 10-Q
11	Covad (business VoIP only)	3	[August 2, 2007] SEC 10-Q
	Note: data was unavailable for some VoIP service providers.
	Note: services with an asterisk * are digital phone, not true VoIP

Vonage's patent woes are ongoing, and could affect subscriber numbers.

Skype terminated its offer of free nationwide calling in North America, so we expect its subscriber numbers to decline.

Covad and XO Communications are no longer reporting end users, only subscriber lines. If either had reported end users, they would rank higher on our chart. XO has a much larger business than appears on our chart, offering VoIP carrier services in addition to the end user services listed here.

Removed from the list
United Online announced that its VoIP service is "being curtailed."

Sunrocket flamed out in a spetacular bankruptcy that will make life difficult for other small VoIP providers.

Net2Phone has been acquired by IDT and did not report subscriber numbers, as far as we know.

We could not find subscriber numbers for KeyOn and VoIP, Inc. and for many other services on the VoIP Providers list below.

Cox has gone private and no longer issues public data.

Paetec reported "voice channels" but we cannot translate this into a subscriber number.