List of commercial voice over IP network providers

This is a list of commercial voice over IP network providers, arranged alphabetically with no restriction to region.

* Adams Cable
* AIM Phoneline
* AIM Call Out
* AT&T CallVantage
* Bellshare (Germany and USA)
* Broadvoice
* BT Group (UK trading as BT Broadband Talk)
* Cable & Wireless (Global product)
* Cbeyond
* Clearwire (only for Clearwire Wireless customers)
* Charter Communications
* Comcast Digital Voice
* Covad (ClearEdge Office, Pro and Integrated access)
* Cox Communications (Northern Virginia)(Parts of Rhode Island)
* Deltathree (Global)
* Engin (Australia)
* Gizmo Project (SIPphone)
* GRNVoIP wholesale voip termination provider
* iTalkBB
* Jajah (connects two regular telephones)
* Lingo
* Mediacom
* Modern Telegraph
* Net2Phone
* ntl:Telewest Business (part of Virgin Media)
* Packet8 (8x8)
* Parlino
* Primus Canada
* Qwest
* Sipgate (Germany, Austria, UK)
* Shaw Communications
* Skype
* Speakeasy
* Suddenlink Communications
* Teamspeak
* Tesco (UK)
* Truphone
* Time Warner
* Verizon VoiceWing
* VoicePulse
* Voipfone (mainly UK)
* VoipStunt
* Vonage
* Voxbone
* Vyke
* Wengo
* Windows Live Call
* Yahoo! Voice