<Li> Windstream (including Earthlink) </Li> <Li> Verizon High Speed Internet </Li> <Li> WideOpenWest (wow!) </Li> <Ul> <Li> B2X Online - VA </Li> <Li> Broadview </Li> <Li> CenturyLink </Li> <Li> Digital West </Li> <Li> Hurricane Electric </Li> <Li> Interlync Internet Services </Li> <Li> IT7 Networks </Li> <Li> MegaPath </Li> <Li> Skyriver </Li> <Li> Ting Internet </Li> <Li> Towerstream </Li> <Li> Stealth Communications </Li> <Li> Windstream </Li> </Ul>

How many internet service providers are there in the usa