Welcome to ApprovedModem.com. We test and review modems and modem router combos for all Internet Service Providers (ISP) in the USA. Whether you want to eliminate modem rental fees or you want to achieve better internet speeds and higher security, we've got you covered. We currently have a complete list if approved modems for Comcast Xfinity, Charter Spectrum, Cox Communications, CentruyLink, Mediacom, WOW (Wide Open West), and we will keep adding new ISPs on weekly basis. We test and recommend 3 top modems for each of these Internet Service Providers so you can rest assured that your new modem will be compatible with your ISP.