Whocalled.us
whocalled.us is a website that lists phone calls from strangers where the caller ID says "Name Unavailable." The site has lists of the callers who call the most, the numbers that have the most comments, and the states that get the most calls. All of the lists have the top of all time and the top for the last seven days. You can also click on Who Is Calling to get a map and reported numbers. People are welcome to add to the database of numbers as well as add their comments about the identity of the callers.