Perfect prime rib. Stephen Walls / Getty Images. Prime rib is a classic roast beef preparation made from the beef rib primal cut, usually roasted with the bone in and served with its natural juices (au jus). Restaurants that serve prime rib are required to use beef that has been graded prime by the USDA.
The Fast Lane Answer. A ZIP Code is a group of five or nine numbers that are added to a postal address to assist the sorting of mail. A complete, 9-digit ZIP Code, including its additional four digits (called a ZIP+4 Code), is the designation of a delivery route.
ZIP+4 Codes are the last 4 digits of a nine-digit ZIP Code. A complete, nine-digit ZIP Code consists of two parts. The first five digits indicate the destination post office or delivery area. The last 4 digits represents a specific delivery route within that overall delivery area. All 9 digits of a full zip code assist the USPS in effectively sorting the mail.