How can I lookup someone's number if I know his name and address?

I am trying to find someone's phone number, but all the websites I've tried just give me a link to a paid site that claims to have it. Aren't there any free sites that will give me the number if I put in the name or address?|||Have you tried callingg directory assistance? or www.411.com might have it|||Yes, Dex Online. Click on the white pages tab.|||I personally use this site and unless you need very personal stuff it is FREE.