VoIP Ranking by Subscriber: Q1 2007

This quarter's numbers are interesting, but next quarter's numbers will be more interesting, as we explain below.

by Alex Goldman ISP-Planet Managing Editor [July 19, 2007]

Rank	ISP	Subs. (thousands)	Date & Source
1	Comcast Digital Phone* (circuit switched customers not counted)	3,000	[April 27, 2007] SEC 10-Q
2	Vonage	2,400	[as of March 31, 2007] Fact Sheet
3	Time Warner Digital Phone*	2,094	[May 2, 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)	1,318	[May 10 2007] SEC 10-Q
6	Charter* (cable VoIP)	573	[May 3, 2007] SEC 10-Q
7	SunRocket (now gone)	150	[old data ] SunRocket Public Relations
8	Insight Communications* (cable VoIP)	148	[May 15, 2007] SEC 10-Q
9	Mediacom* (cable VoIP)	123	[May 10, 2007] SEC 10-Q
10	CBeyond	28	[May 10, 2007] Press Release
11	NetZero VoIP (residential VoIP, counting paid subscribers only)	15	[May 3, 2007] SEC 10-Q
12	XO Communications** (business VoIP only)	9	[May 10, 2007] SEC 10-Q
13	Covad (business VoIP only, 2,492 VoIP business customers number of stations not disclosed)	2	[May 7, 2007] SEC 10-Q
	Note: data was unavailable for some VoIP service providers.
	Note: services with an asterisk * are digital phone, not true VoIP

SunRocket's demise will be the story of the next quarter, as we expect significant changes in these rankings. Those changes will make next quarter's numbers far more interesting than this quarter's.

These statistics are a snapshot in time, generally showing the race as of March 31, 2007, although some statistics are from different points in time.

Note that we may not be aware of all VoIP providers, and therefore this is not a complete list.

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

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

Doubts about Sunrocket are increasing. See notes from DSL Reports and GigaOM.

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.

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

Cox has gone private and no longer issues public data.

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