A Dun & Bradstreet number lookup is a search method that allows interested parties to search for a company's D&B D-U-N-S Number. On its website, Dun & Bradstreet offers a lookup tool that can use various types of company information to search for its unique D-U-N-S number.
Alternatively, a D-U-N-S number can also be used to lookup which company it is associated with. As of 2015, the D-U-N-S number is used to measure the creditworthiness of a particular company. Each company receives a unique number that does not change even as it continues to grow. The number is also used by various global organizations, such as the U.S. Federal Government and the U.N.