Find Phone number, Location Address and all other information of Colleges And Universities in Karachi Preston University - [Recognized by HEC] Karachi on Branches.pk, Pakistan’s Largest Branches Directory. You can contact them directly on Phone number +92-21-35121291, 35121292, or you can visit their location in person, address location is: LS-1, Sector 15, Main Korangi Industrial Area, Karachi.