Now named SportSouth; It is a RSN like any other and only in some zip codes. Check out their site for a zip code DB maybe (if they have a site yet).
http://en.wikipedia.org/wiki/SportSouth
http://en.wikipedia.org/wiki/Turner_South
There are two major differences between FSN South and SportSouth:
* SportSouth plans to air only programs of interest to the region, much as FSN Prime Ticket does in Southern California. Jeff Genthner, vice president and general manager of FSN South and SportSouth, cited a program currently in the works on Hawks rookie Shelden Williams' first year in the NBA as one example. Thus, only FSN South will carry national FSN games, such as those from the Big 12 and Pac-10 Conferences.
* SportSouth is blacked out in areas not covered by the ZIP codes in the regional coverage area. For example, viewers of DirecTV's "Sports Pack" in other parts of the United States will not receive the channel. The blackout policy dates back to the days of Turner/Time Warner ownership.
FSN South also covers a somewhat wider broadcast area, and offers a variety of different MLB, NBA, and NHL teams, depending on location.