Meiabase is a division of Premiere Radio Networks, located in Sherman Oaks, California. Mediabase is a music industry website containing in-depth charts and analysis based on the monitoring of 1,836 radio stations in the US and Canada, in 175 radio markets. Mediabase features realtime charts in 25 radio formats, based on radio airplay. In addition, its services has hundreds of analytical tools. Mediabase also owns a service called ratethemusic.com, where consumers rate music.