My mom just called me from that number and she is on a cruise in Mexico.  Maybe it is a phone number on the ship or maybe it is a payphone number in Mexico somewhere.  Don't know.  That's my best educated guess! lol

What is happening is the phone call is originating in Mexico. The cell phone number is from the U.S. So what happens is the number is on their network so its getting transferred to a number to be sent America. So i am assuming all numbers from Mexico originating from an American cell phone will have the same number.