You can find out channels, on Comcast Xfinity Basic 1 Cable service, at 14,15,16, 18, 19, 20, and 21 in our seven-city area. CenturyLink Prism channels are located at Mosaic 31, or Channels 8414, 8415, 8416, 8418, 8419, 8420, and 8421. Click here for descriptions of our channels.