Exhibit 21

SUBSIDIARIES OF THE COMPANY

Parent Level: R.H. Donnelley Corporation (formerly known as The Dun & Bradstreet Corporation), a Delaware corporation

Tier 1 Subsidiary: R.H. Donnelley Inc. (formerly known as The Reuben H. Donnelley Corporation), a Delaware corporation wholly owned by R.H. Donnelley Corporation

Tier 2 Subsidiary: Get Digital Smart.com, Inc., wholly owned by R.H. Donnelley Inc.