We are trying to get more geo specific campaigns going, but have found that many of our contacts location data is out of date, missing, or just plan wrong, so we need to update location data on our contacts. We have Data.com connected to our SFDC account but you have to manually update contacts one at a time. We are looking for a provider than can clean our entire list location data, then upload the updated data into SFDC which will then sync with Eloqua for our segment creating.
What companies have any of you used to clean up your existing contact data?