the telco can pinpoint the cell site (tower) being used by a given number, however i do believe they won't do that unless directed by a court. or should i say, they are not supposed to do that. however, dahil pinas nga ito, better think of someone you know that works sa telco na nabanggit. but i do believe, what you will only get is a general location, and not a specific location, as in precise to a few meters only.
think person finder, yung dating value added services ng mga telco wherein you register a friend's number and later on query his / her location via "WIS" and you get a message that says This person is in "Dau, Mabalacat, blah, blah, blah. hope that helps.