Local Business Directory Central serves business within a specific location, usually designated by SCF (first three numbers of the five-number zip code), as well as those business' and services that offer service within those SCF's. We do this by offering a functional and active directory. We employ modern and only the most ethical SEO, guaranteeing your site will benefit from our efforts. Those listed with us have the opportunity enhance their site listing for a nominal advertising fee. Banner advertising is also available at a very reasonable price.