Data.com Tab to Be Available Only to Prospector Customers

The Data.com tab in Salesforce Classic will be available only to licensed customers of Data.com Prospector as of Winter ’18. Currently, all Salesforce customers can search for companies, contacts, and leads in the tab. Licensed customers of Data.com Prospector can also import records. This change applies to Salesforce Classic only.
Available in: Contact Manager, Group, Professional, Enterprise, Performance, and Unlimited Editions