| 1 | WPL | Aeronaves del Peru S.A. | Callsign: Peru, | PE | AVCODES |
| 2 | WPLN | WORLD PACIFIC LINE | | | SCAC4 |
| 3 | WPLT | WIRCO PRODUCTS LIMITED | | | SCAC4 |
| 4 | WPLX | White Provision Co., Inc. | 7/1932-7/1935 | | NAKINA |
| 5 | WPLX | North American Car Corp. | added 1/1967; 4/1970-1/1980; eliminated 1/1984 | | NAKINA |
| 6 | WPLX | General Electric Railcar Services Corp. | added 1/1984; 1/1994; eliminated 10/1994 | | NAKINA |
| 7 | WPLX | North American Car Corp. | added 1/67; 4/70-1/80 | | NRHS |
| 8 | WPLX | General Electric Railcar Services Corp. | 1/94; eliminated 10/94 | | NRHS |
| 9 | WPLX | WHITE PROVISION CO., INC. | | | PWRC |
| 10 | WPLX | (NATX) GENERAL ELECTRIC RAILCAR SERVICES CORPORATION | | | PWRC |
| 11 | WPLX | White Provision Co. (GE Rail Services) | | | RSRV |
