Yes it's quite easy to find out who a cell phone number belongs to and locate the cell phone owner.
Part of my work revolves around obtaining cell phone records the guys I use are Reverse Cell Phone Records : Their cell phone number directory is substantial, accurate and updated regularly - plus they supply a money back guarantee, unlike many other reverse cell phone search sites.
It's a pity but there's no free way of obtaining cell phone records to locate the owner of a cell phone number. This info is "guarded" by the large cell phone companies who charge to release the info. There are some private companies who buy the information, and then sort, categorize and upload it to the net. It's this convenience that we have to pay for.
A friendly warning : There are many so-called "Free" reverse cell number directories who say their searches are free ... but that's just it, the searches are free but you still have to pay for obtaining cell phone records! Very cheeky! Alternatively some don't even bother with the pretense they just link directly to paid sites.
Hope that helps a bit,
All the best.