Real world company prefixes
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S& SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ
SRA SRB SRC SRD SRE SRF SRG SRH SRI SRJ SRK SRL SRM SRN SRO SRP SRQ SRR SRS SRT SRU SRV SRW SRX SRY SRZ
S& SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ
SRA SRB SRC SRD SRE SRF SRG SRH SRI SRJ SRK SRL SRM SRN SRO SRP SRQ SRR SRS SRT SRU SRV SRW SRX SRY SRZ
| 1 | SR | SouthRail Corp. | added 7/88; 1/94; eliminated 7/94 | NRHS | |
| 2 | SR | KANSAS CITY SOUTHERN RAILWAY COMPANY [SOUTHRAIL CORPORATION] | PWRC | ||
| 3 | SR | SouthRail Corp. | added 7/1988; 1/1994; eliminated 7/1994 | NAKINA | |
| 4 | SR | Kansas City Southern Ry. Co. | added 7/1994; 7/2000-7/2005 | NAKINA | |
| 5 | SR | ScotRail Railways | UK | VKM | |
| 6 | SR | Southrail Corp. (Kansas City Southern Railway) | RSRV | ||
| 7 | SR | SOUTHRAIL CORPORATION | SCAC4 | ||
| 8 | SR | Kansas City Southern Ry. Co. | added 7/94; 7/2000 | NRHS | |
| 9 | SRA | Sair Aviation | ICAO1 | ||
| 10 | SRAA | SILVERLINE CARRIERS INC | SCAC4 | ||
| 11 | SRAB | SELECCIONAD | SCAC4 | ||
| 12 | SRAD | SLOAN PETROLEUM TRANSPORT LLC | SCAC4 | ||
| 13 | SRAE | SRS ENTERTAINMENT INC | SCAC4 | ||
| 14 | SRAF | STRATFORD TRUCKING SERVICE INC | SCAC4 | ||
| 15 | SRAG | SANRAM TRANSPORT INC | SCAC4 | ||
| 16 | SRAIL | Stahlberg Roensch GmbH | DE | VKM | |
| 17 | SRAJ | SANCHEZ RODRIGUEZ, ANTONIO JAVIER | SCAC4 | ||
| 18 | SRAK | SPANISH RIVER NURSERY INC. | SCAC4 | ||
| 19 | SRAL | SORENSEN, RANDY TRUCKING | SCAC4 | ||
| 20 | SRAN | SIERRA INC | SCAC4 | ||
| 21 | SRAO | SOUTH CALIFORNIA TRANSPORTATION INC | SCAC4 | ||
| 22 | SRAP | STRABER OIL CO INC | SCAC4 | ||
| 23 | SRAS | STRATO TRANSPORT INC | SCAC4 | ||
| 24 | SRAT | SCRANTON TRANSFER, INC | SCAC1 | ||
| 25 | SRAU | SRA SAVAC | SCAC4 | ||
| 26 | SRAV | SEARSONS, THE | SCAC4 | ||
| 27 | SRAW | SIERRA WEST EXPRESS | SCAC1 | ||
| 28 | SRAX | *STATE REFINING ASSOCIATION | PWRC | ||
| 29 | SRAX | +SOUTHERN RAIL ASSOCIATES INC. | PWRC | ||
| 30 | SRAX | The State Refining Association | 8/1920 | NAKINA | |
| 31 | SRAX | Southern Rail Associates Inc. | added 7/2002; 7/2005 | NAKINA | |
| 32 | SRAX | Southern Rail Associates | RSRV | ||
| 33 | SRAX | SOUTHERN RAIL ASSOCIATES INC | SCAC4 | ||
| 34 | SRAY | ST ROSE NURSERY | SCAC4 | ||
| 35 | SRB | Südburgenländische Regionalbahn | AT | VKM | |
| 36 | SRBA | STAR BULK | SCAC4 | ||
| 37 | SRBB | STRUBE | SCAC4 | ||
| 38 | SRBD | SEMI RETIRED TRUCKING CO | SCAC4 | ||
| 39 | SRBF | SENATOR SHIPPING COMPANY LIMITED | SCAC4 | ||
| 40 | SRBI | SATURN BROKERAGE INC | SCAC4 | ||
| 41 | SRBJ | SHARBER, J E OIL CO INC | SCAC4 | ||
| 42 | SRBL | S A R TRANSPORTES | SCAC4 | ||
| 43 | SRBM | STRUBLE, ROY TRUCKING INC | SCAC4 | ||
| 44 | SRBP | SIERRA RENTAL AND TRANSPORT COMPANY | SCAC4 | ||
| 45 | SRBQ | SCHNELL RACING STABLE | SCAC4 | ||
| 46 | SRBR | S R F T C BROKERS | SCAC4 | ||
| 47 | SRBS | SUNRIDGE TRANSPORTATION BROKERS | SCAC4 | ||
| 48 | SRBU | ALBERT REBERS GMBH | SCAC3 | ||
| 49 | SRBU | Leidos | RSRV | ||
| 50 | SRBW | SHANNON, ROBERT | SCAC4 | ||
| 51 | SRC | Strasburg R.R. Co. | 1/75-7/2000 | NRHS | |
| 52 | SRC | Searca | ICAO1 | ||
| 53 | SRC | STRASBURG RAILROAD CO. | PWRC | ||
| 54 | SRC | Strasburg R.R. Co. | 1/1975-7/2005 | NAKINA | |
| 55 | SRC | Strasburg Rail Road | RSRV | ||
| 56 | SRCC | SUDDATH RELOCATION SYSTEMS OF CALIF | SCAC4 | ||
| 57 | SRCD | SEPPALA, R C TRUCKING INC | SCAC4 | ||
| 58 | SRCF | SRC OPROMEX SA DE CV | SCAC4 | ||
| 59 | SRCG | SHARROCK TRUCKING INC | SCAC4 | ||
| 60 | SRCH | STARBURST COIN MACHINES INC | SCAC4 | ||
| 61 | SRCI | STAR TRUCKING INC | SCAC4 | ||
| 62 | SRCM | Swiss Rail Car Management GmbH | CH | VKM | |
| 63 | SRCM | SERCOM | SCAC4 | ||
| 64 | SRCO | SUNSET RAILWAY CO. | PWRC | ||
| 65 | SRCP | SOUTHEASTERN RECYCLING CORPORATION | SCAC4 | ||
| 66 | SRCQ | SOURCE TRANSPORT | SCAC4 | ||
| 67 | SRCR | SOLUTION RECOVERY SERVICE | SCAC4 | ||
| 68 | SRCU | NORDIC BULKERS AB | SCAC4 | ||
| 69 | SRCX | RICHARDSON, SID CARBON CO | SCAC3 | ||
| 70 | SRCX | Sid Richardson Carbon Co. | 1/52-7/2000 | NRHS | |
| 71 | SRCX | SID RICHARDSON CARBON CO. | PWRC | ||
| 72 | SRCX | Sid Richardson Carbon Co. | 1/1950-7/2005 | NAKINA | |
| 73 | SRCX | Sid Richardson Carbon | RSRV | ||
| 74 | SRCX | SID RICHARDSON CARBON CO | SCAC4 | ||
| 75 | SRCY | SOURIS RIVER COLONY FARMS LTD | SCAC4 | ||
| 76 | SRD | Search and Rescue 22 | ICAO1 | ||
| 77 | SRDA | SURROUNDART | SCAC4 | ||
| 78 | SRDB | SHAMROCK DISTRIBUTION, INC | SCAC1 | ||
| 79 | SRDB | SHAMROCK DISTRIBUTION INC | SCAC4 | ||
| 80 | SRDF | SATURN INDUSTRIES LTD | SCAC4 | ||
| 81 | SRDH | SUPERIOR DISPATCH INC | SCAC4 | ||
| 82 | SRDI | STADIUM DIRT DESIGNS INC | SCAC4 | ||
| 83 | SRDL | SMITH, RICHARD L TRUCKING INC | SCAC4 | ||
| 84 | SRDM | STOUTS READY MIX LTD | SCAC4 | ||
| 85 | SRDO | SCHROEDER ENTERPRISES | SCAC4 | ||
| 86 | SRDQ | STARR TRANSPORTATION LLC | SCAC4 | ||
| 87 | SRDR | SEARIDERS | SCAC4 | ||
| 88 | SRDS | SERVICIO REGIOMONTANO DE FLETES SA | SCAC4 | ||
| 89 | SRDV | S T I TRANS INC | SCAC4 | ||
| 90 | SRDW | SHAW, RON TRUCKING | SCAC4 | ||
| 91 | SRDX | D-X Sunray Oil Co. | 10/57-4/61 | NRHS | |
| 92 | SRDX | SUN OIL CO. {D-X SUNRAY OIL CO.} | PWRC | ||
| 93 | SRDX | D-X Sunray Oil Co. | 10/1957-4/1961; eliminated 7/1962 | NAKINA | |
| 94 | SRDX | Sunray D-X Oil Co. | added 7/1962; 7/1965-10/1966; eliminated 4/1969 | NAKINA | |
| 95 | SRDX | Sun Oil Co., D-X Division | added 4/1969 | NAKINA | |
| 96 | SRDX | Sunray D-X Oil Co. | eliminated 4/1970 | NAKINA | |
| 97 | SRDX | Sun Oil Co. | added 4/1970; 4/1970; eliminated 1/1972 | NAKINA | |
| 98 | SRDX | Sun Oil Co. of Pennsylvania | added 1/1972; 1/1975; eliminated 7/1976; 1/1980 | NAKINA | |
| 99 | SRDX | Sunray D-X Oil Co. | 7/65-10/66; eliminated 4/69 | NRHS | |
| 100 | SRDX | Sun Oil Co., D-X Division | added 4/69 | NRHS |