Yell Data, formerly known as The Business Database, provides business lists, data enhancement, data management and data analysis to UK businesses.
It has a database of 1.6m live UK business records, based on information from its flagship product, Yellow Pages.
As part of its relaunch, Yell Data is offering discounts on data bought this month through its telesales operation.
It has also redesigned its online direct marketing operation, available via Yell.com.
The new website allows customers to perform unlimited free counts of available records, get quotes for tailored lists before registering, and purchase company contact details.
Richard Duggleby, head of external relations at Yell, said: "The Business Database, now Yell Data, has already proved to be highly successful, with more than 100m records supplied last year and clients ranging from small businesses to large corporates.
"We have a high level of business data and invest heavily to improve its quality, breadth and depth. We feel the new name better reflects the service's links to the other Yell brands, particularly Yell.com, the location for Yell Data online."
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