If the number calling is a private number- which means it’s more than likely a cell phone number- then trying to do a reverse lookup or trying to trace the number is going to be difficult.  The reason being is cell phone numbers can not be found in the white or yellow pages because they are considered to be private numbers instead of public numbers like residents or businesses. free reverse cell phone directory By doing a reverse lookup on a cellular telephone number, you will have better luck and will be given more information about who is calling.  With a cell phone reverse lookup, you will be able to obtain a name, address, birthday, and the list goes on and on.