The 787-777 exchange is serviced by the following companies within the RIOPIEDRAS ratecenter.
PUERTO RICO TELEPHONE CO.
Call are routed trough OCN 3201 and CLLI - RPDRPRCODS1 (Common Language Location Identifier Code) and Point of Interface (POI) switch which is located in RIO PIEDRAS.
Who's number is 787-777 Numbers?