| 15701 | CSNQ | C & SONS | | | SCAC3 |
| 15702 | CSNQ | CT & SONS TRANSPORT LTD | | | SCAC4 |
| 15703 | CSNR | CONSOLIDATED TRANSPORTATION SERVICE | | | SCAC3 |
| 15704 | CSNR | CONSOLIDATED TRANSPORTATION SERVICE | | | SCAC4 |
| 15705 | CSNS | CHRISTENSEN, STEVEN | | | SCAC3 |
| 15706 | CSNS | CARSONS TRANSPORT LLC | | | SCAC4 |
| 15707 | CSNT | COLUMBIAN STORAGE&TRANSFER CO | | | SCAC3 |
| 15708 | CSNT | COLUMBIAN DISTRIBUTION SERVICES INC | | | SCAC4 |
| 15709 | CSNU | COSCO SHIPPING LINES CO LTD | | PRC | BIC |
| 15710 | CSNW | CENTRAL STORAGE & WAREHOUSE COMPANY | | | SCAC3 |
| 15711 | CSNW | COIROAND SON TRANS EXPORT | | | SCAC4 |
| 15712 | CSNX | Trident NGL, Inc. | added 4/1992; eliminated 10/1993; 1/1994-7/2005 (not listed) | | NAKINA |
| 15713 | CSNX | OXY USA Inc. | eliminated 4/1992 | | NAKINA |
| 15714 | CSNX | OXY NGL Inc. | added 7/1988 | | NAKINA |
| 15715 | CSNX | OXY Cities Service NGL Inc. | added 1/1986; eliminated 7/1988 | | NAKINA |
| 15716 | CSNX | Cities Service Oil and Gas Corp. | added 5/1983; eliminated 1/1986 | | NAKINA |
| 15717 | CSNX | Cities Service Co., NGL Division | added 4/1979; 1/1980; eliminated 5/1983 | | NAKINA |
| 15718 | CSNX | Cities Service Co. | added 4/1978; eliminated 4/1979 | | NAKINA |
| 15719 | CSNX | National Car Co. (Lincoln Packing Co.) | eliminated 4/1953 | | NAKINA |
| 15720 | CSNX | Fruit Growers Express Co. | 1/1950-1/1952 | | NAKINA |
| 15721 | CSNX | Fruit Growers Express Co. | Jan-52 | | NRHS |
| 15722 | CSNX | Cities Service Co. | added 4/78; eliminated 4/79 | | NRHS |
| 15723 | CSNX | Cities Service Co., NGL Division | added 4/79; 1/80; eliminated 5/83 | | NRHS |
| 15724 | CSNX | Cities Service Oil and Gas Corp. | added 5/83; eliminated 1/86 | | NRHS |
| 15725 | CSNX | OXY Cities Service NGL Inc. | added 1/86; eliminated 7/88 | | NRHS |
| 15726 | CSNX | OXY NGL Inc. | added 7/88 | | NRHS |
| 15727 | CSNX | OXY USA Inc. | eliminated 4/92 | | NRHS |
| 15728 | CSNX | Trident NGL, Inc. | added 4/92; eliminated 10/93; 1/94-7/2000 | | NRHS |
| 15729 | CSNX | *NATIONAL CAR CO. {LINCOLN PACKING CO.; FRUIT GROWERS EXPRESS CO.] | | | PWRC |
| 15730 | CSNX | +CITIES SERVICE OIL & GAS CORP (TRIDENT NGL, INC.) | | | PWRC |
| 15731 | CSNX | Cities Service Oil and Gas Corporation (Trident NGL) | | | RSRV |
| 15732 | CSNX | TRIDENT NGL INC | | | SCAC4 |
| 15733 | CSNY | CORNERSTONE SYSTEMS INC | | | SCAC4 |
| 15734 | CSO | Casino Airlines, Inc. | Callsign: Casair, | USA | AVCODES |
| 15735 | CSO | Casino Airline | | | ICAO1 |
| 15736 | CSO | Connecticut Southern R.R. Inc. | added 4/1997; 7/2000-7/2005 | | NAKINA |
| 15737 | CSO | Connecticut Southern R.R. Inc. | added 4/97; 7/2000 | | NRHS |
| 15738 | CSO | CONNECTICUT SOUTHERN RAILROAD | | | PWRC |
| 15739 | CSO | Connecticut Southern Railroad | | | RSRV |
| 15740 | CSO | CONNECTICUT SOUTHERN RAILROAD INC | | | SCAC4 |
| 15741 | CSO | Connecticut Southern Railroad | | USA | TRAFFIC |
| 15742 | CSOB | CUSTOM TOURS & TRANSPORTATION | | | SCAC3 |
| 15743 | CSOC | CASON BUILDERS SUPPLY INC | | | SCAC3 |
| 15744 | CSOC | CASON BUILDERS SUPPLY | | | SCAC4 |
| 15745 | CSOD | CARRASCO TRUCKING | | | SCAC3 |
| 15746 | CSOE | CROSS OIL COMPANY | | | SCAC3 |
| 15747 | CSOF | CARR & SONS INC | | | SCAC3 |
| 15748 | CSOG | CARNEY & SON TRUCKING SERVICES INC | | | SCAC3 |
| 15749 | CSOH | CARSTENSEN & SONS TRUCKING INC | | | SCAC3 |
| 15750 | CSOI | CARLSON, JOEL TRUCKING INC | | | SCAC3 |
| 15751 | CSOJ | CENTRAL & SOUTHERN TRANSPORT INC | | | SCAC3 |
| 15752 | CSOJ | CLASSICAL THEATRE PROJECT | | | SCAC4 |
| 15753 | CSOK | CUSTOM TRUCK | | | SCAC3 |
| 15754 | CSOK | CARGO SOLUTIONS | | | SCAC4 |
| 15755 | CSOL | CHEETAH SHIPPING CO LTD | | | SCAC3 |
| 15756 | CSOM | CUSTOM SERVICES | | | SCAC3 |
| 15757 | CSOM | CANYON STATE OIL CO INC | | | SCAC4 |
| 15758 | CSOM | Csömödér | Real: CAEV | H | TRAFFIC |
| 15759 | CSON | CONSUMERS OIL CORPORATION | | | SCAC4 |
| 15760 | CSOO | CONSOLIDATED CONTAINER CORPORATION | | | SCAC3 |
| 15761 | CSOO | CAROUSEL SOFTOYS INC | | | SCAC4 |
| 15762 | CSOP | CARSON OIL COMPANY | | | SCAC3 |
| 15763 | CSOP | CARSON OIL COMPANY INC | | | SCAC4 |
| 15764 | CSOQ | C & T TRANSPORT SERVICES CO | | | SCAC4 |
| 15765 | CSOR | Connecticut Southern Railroad | | | RSRV |
| 15766 | CSOR | CHASSILORS INC | | | SCAC3 |
| 15767 | CSOS | CASTILLO, MARMOLES | | | SCAC4 |
| 15768 | CSOT | CARLSON TRUCKING | | | SCAC3 |
| 15769 | CSOT | CRISCO TRANSIT INC | | | SCAC4 |
| 15770 | CSOU | CMA-CGM | | F | BIC |
| 15771 | CSOU | CAZENOVIA SOUTHERN RAILROAD | | | PWRC |
| 15772 | CSOU | CONTAINER MARKETING (OVESEAS) LTD | | | SCAC3 |
| 15773 | CSOU | CONTAINER MARKETING (OVERSEAS) LTD | | | SCAC4 |
| 15774 | CSOV | CASH & SON CARTAGE AGENT | | | SCAC3 |
| 15775 | CSOW | C & S TOWING SERVICE INC | | | SCAC3 |
| 15776 | CSOW | CS LOGISTICS | | | SCAC4 |
| 15777 | CSOX | CITGO Petroleum Corp. | added 7/1983; 1/1994-7/2005 | | NAKINA |
| 15778 | CSOX | Cities Service Co., Petroleum Products Group | added 1/1981; eliminated 7/1983 | | NAKINA |
| 15779 | CSOX | Cities Service Pipe Line Co. | added 4/1979; 1/1980; eliminated 1/1981 | | NAKINA |
| 15780 | CSOX | Cities Service Co. | added 4/1978; eliminated 4/1979 | | NAKINA |
| 15781 | CSOX | Cities Service Pipe Line Co. | added 10/1967; 4/1970-1/1975; eliminated 4/1978 | | NAKINA |
| 15782 | CSOX | Cities Service Oil Co. | added 4/1963; 7/1965-10/1966; eliminated 10/1967 | | NAKINA |
| 15783 | CSOX | Cities Service Petroleum Co. | added 7/1962; eliminated 4/1963 | | NAKINA |
| 15784 | CSOX | Cities Service Oil Co. | 7/1937-4/1961; eliminated 7/1962 | | NAKINA |
| 15785 | CSOX | Cities Service Oil Co. of Ohio | 7/1930 | | NAKINA |
| 15786 | CSOX | Cities Service Oil Co. of Pennsylvania | Apr-38 | | NRHS |
| 15787 | CSOX | Cities Service Oil Co. | 1/52-10/66; eliminated 10/67 | | NRHS |
| 15788 | CSOX | Cities Service Pipe Line Co. | added 10/67; 4/70-1/75; eliminated 4/78 | | NRHS |
| 15789 | CSOX | Cities Service Co. | added 4/78; eliminated 4/79 | | NRHS |
| 15790 | CSOX | Cities Service Pipe Line Co. | added 4/79; 1/80; eliminated 1/81 | | NRHS |
| 15791 | CSOX | Cities Service Co., Petroleum Products Group | added 1/81 | | NRHS |
| 15792 | CSOX | CITGO Petroleum Corp. | 1/94-7/2000 | | NRHS |
| 15793 | CSOX | CITGO PETROLEUM CORP. [CITIES SERVICE OIL CO.] | | | PWRC |
| 15794 | CSOX | CITGO Petroleum Corporation | | | RSRV |
| 15795 | CSOX | CITIES SERVICE PIPELINE CO | | | SCAC3 |
| 15796 | CSOX | CITGO PETROLEUM CORP | | | SCAC4 |
| 15797 | CSOY | CASA OVERSEAS LTD | | | SCAC3 |
| 15798 | CSOY | CONTAINERSHIPS LTD OY | | | SCAC4 |
| 15799 | CSP | Casper Air Service, Inc. | Callsign: Casper Air, | USA | AVCODES |
| 15800 | CSP | Casper Air Service | | | ICAO1 |
