National Cable Communications is one of the largest spot cable advertising sales firms in the United States. It is owned by Comcast Cable, Cox Media and Time Warner Cable. National Cable Communications reaches more than 66 million homes nationwide. Its media buying process, through its eBusiness Services Group, allows advertisers and cable system affiliates to place ads from their desktop and allows clients to place ads targeting specific audiences. National Cable Communications represents various multiple system operators for spot cable advertising sales, including Adelphia, Adlink, Bresnan Communications, Bright House Networks, Buckeye CableSystem, Cable One, Cable Vantage, Cablevision and Charter Media. Headquartered in New York City, National Cable Communications maintains a sales office in Los Angeles.