The ZIP+4 identifies a certain geographic section in the five-digit delivery area, for instance a city block, a bunch of apartments, or maybe a put up office box. The ZIP+4 may also suggest the facet of the street on which a building is located.OK9 là m?t trang Net cung c?p d?ch v??cá c??c c?c h?p d?n. Sân ch?i yêu c?u ng??i dùng ph?i ???eight