I have used whoeasy and had great results.
You can do a free search on people and background search and then to get more information you pay for the subscription.
I paid for the subscription to get more information and they gave me all the information I needed when looking up someone.
When you search initially, it is free of cost and not at all complicated.
Just type in the phone number in the search box and wait for Whoeasy to furnish the basic information of the user.
You will get the name, address and email addresses.