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
STA STB STC STD STE STF STG STH STI STJ STK STL STM STN STO STP STQ STR STS STT STU STV STW STX STY STZ
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
STA STB STC STD STE STF STG STH STI STJ STK STL STM STN STO STP STQ STR STS STT STU STV STW STX STY STZ
| 1 | ST | Springfield Terminal Ry. Co. (Vermont) | 1/75-1/80; eliminated 4/85 | NRHS | |
| 2 | ST | *GUILFORD RAIL SYSTEM [SPRINGFIELD TERMINAL RAILWAY] | PWRC | ||
| 3 | ST | +ST RAIL SYSTEM | PWRC | ||
| 4 | ST | Springfield Terminal Ry. Co. (Vermont) | 1/1975-1/1980; eliminated 4/1985 | NAKINA | |
| 5 | ST | Springfield Terminal Ry. Co. (MA) | added 4/1985; eliminated 10/1987 | NAKINA | |
| 6 | ST | Springfield Terminal Ry. Co. (NH) | added 10/1987 | NAKINA | |
| 7 | ST | Springfield Terminal Ry. Co. | 1/1994 | NAKINA | |
| 8 | ST | Springfield Terminal Ry. Co. (NH) | eliminated 10/1997 | NAKINA | |
| 9 | ST | ST Rail System | 7/2000-7/2005 | NAKINA | |
| 10 | ST | Sursee-Triengen Bahn AG | CH | VKM | |
| 11 | ST | Sydtåg | 1991 - 1997 | S | svenska-lok.se |
| 12 | ST | Springfield Terminal Railway (Pan Am Railways) | RSRV | ||
| 13 | ST | ST RAIL SYSTEM | SCAC4 | ||
| 14 | ST | Springfield Terminal Ry. Co. (MA) | added 4/85; eliminated 10/87 | NRHS | |
| 15 | ST | Springfield Terminal Ry. Co. (NH) | added 10/87 | NRHS | |
| 16 | ST | Springfield Terminal Ry. Co. | Jan-94 | NRHS | |
| 17 | ST | Springfield Terminal Ry. Co. (NH) | eliminated 10/97 | NRHS | |
| 18 | ST | ST Rail System | Jul-00 | NRHS | |
| 19 | STA | Star Aviation | ICAO1 | ||
| 20 | STA | Stahlberg Track Asset GmbH & Co. KG | DE | VKM | |
| 21 | STAA | ST AMANT, ROSARIO | SCAC4 | ||
| 22 | STAB | Svensk Tågkraft AB | SE | VKM | |
| 23 | STAB | Svensk Tågkraft AB | 2004 - | S | svenska-lok.se |
| 24 | STAB | STAVANGER BAY KS | SCAC4 | ||
| 25 | STAC | STAR MOVING & STORAGE INC | SCAC4 | ||
| 26 | STAD | STANDARDEX LLC | SCAC4 | ||
| 27 | STAE | ST AGUEDA TRANSP SERVS | SCAC4 | ||
| 28 | STAG | Stadler Bussnang AG | CH | VKM | |
| 29 | STAI | STALLARD INC | SCAC4 | ||
| 30 | STAK | STAR TRUCKING INC | SCAC4 | ||
| 31 | STAL | Siemens Transformers Austria GmbH & Co KG | AT | VKM | |
| 32 | STAL | STALLWORTH TRUCKING INC | SCAC4 | ||
| 33 | STAO | STANDARD TOOL | SCAC4 | ||
| 34 | STAP | Stadler Pankow GmbH | DE | VKM | |
| 35 | STAP | STAR 2000 TRUCK LINES | SCAC4 | ||
| 36 | STAR | STAR, A A, TRANSFER CO. | PWRC | ||
| 37 | START | MÁV-START ZRt. | HU | VKM | |
| 38 | STAT | STAATS EXPRESS, INC | SCAC1 | ||
| 39 | STAU | STAR SHIPPING A/S | SCAC1 | ||
| 40 | STAU | STAR SHIPPING A NORWAY | PWRC | ||
| 41 | STAU | Star Shipping A Norway | RSRV | ||
| 42 | STAUB | STAUB& CO Chemiehandelsgesellschaft mbH | DE | VKM | |
| 43 | STAV | STAV GmbH | DE | VKM | |
| 44 | STAX | Stauffer Chemical Co. -- Northern California Branch | 4/38-1/52; eliminated 7/56 | NRHS | |
| 45 | STAX | OCI CHEMICAL CORPORATION [(RPBX) RHONE-POULENC BASIC CHEMICALS CO.; STAUFFER CHEMICAL CO.] | PWRC | ||
| 46 | STAX | Stauffer Chemical Co. (Northern California Branch) | 7/1930-7/1935 | NAKINA | |
| 47 | STAX | Stauffer Chemical Co. — Northern California Branch | 7/1937-7/1954; eliminated 7/1956 | NAKINA | |
| 48 | STAX | Stauffer Chemical Co. (Western Branch) | added 7/1956; 10/1957-1/1975 | NAKINA | |
| 49 | STAX | Stauffer Chemical Co. | 1/1980; eliminated 4/1990 | NAKINA | |
| 50 | STAX | Rhone-Poulenc Basic Chemicals Co. | added 4/1990; 1/1994; eliminated 7/1996 | NAKINA | |
| 51 | STAX | OCI Chemical Corp. | added 7/1996; 7/2000-7/2005 | NAKINA | |
| 52 | STAX | Stauffer Chemical (OCI Chemical Corporation) | RSRV | ||
| 53 | STAX | Stauffer Chemical Co. (Western Branch) | added 7/56; 10/57-1/75 | NRHS | |
| 54 | STAX | Stauffer Chemical Co. | 1/80; eliminated 4/90 | NRHS | |
| 55 | STAX | Rhone-Poulenc Basic Chemicals Co. | added 4/90; 1/94; eliminated 7/96 | NRHS | |
| 56 | STAX | OCI Chemical Corp. | added 7/96; 7/2000 | NRHS | |
| 57 | STB | Status-Alpha Airline | ICAO1 | ||
| 58 | STB | Süd-Thüringen Bahn | DE | VKM | |
| 59 | STB | Süd Thüringen Bahn GmbH | Meiningen | D | privat-bahn.de |
| 60 | STBA | SANTA BARBARA AIRBUS | SCAC4 | ||
| 61 | STBAT | Steiermarkbahn Transport & Logistik GmbH | AT | VKM | |
| 62 | STBC | STUBBLEFIELD COMPANY | SCAC4 | ||
| 63 | STBE | SIMS CAB DEPOT | SCAC4 | ||
| 64 | STBH | SELLERS TRANSPORTATION INC | SCAC4 | ||
| 65 | STBI | STONINGTON GALLERY INC | SCAC4 | ||
| 66 | STBL | SPARTAN TRANSPORT NATIONWIDE LLC | SCAC4 | ||
| 67 | STBN | SCOTT & BEARSKIN | PWRC | ||
| 68 | STBO | STONE, BOB | SCAC4 | ||
| 69 | STBQ | S T BROS | SCAC4 | ||
| 70 | STBS | ST-BASILE TRANSPORT INC (DIV OF CIM | SCAC4 | ||
| 71 | STBU | STOLT TANK CONTAINERS LEASING LTD | SCAC4 | ||
| 72 | STBV | STUBBS, KEVIN TRUCKING INC | SCAC4 | ||
| 73 | STBY | SCROGGINS TRUCKING | SCAC4 | ||
| 74 | STC | Stadium City Limited | ICAO1 | ||
| 75 | STC | SIMPSON TIMBER CO. | PWRC | ||
| 76 | STCB | STEUBENVILLE TRANSFER CO | SCAC1 | ||
| 77 | STCC | SHRED-TECH CORPORATION | SCAC4 | ||
| 78 | STCD | STATUS TRANSPORT CORP | SCAC4 | ||
| 79 | STCE | STRICKLAND TRANSP CO INC | PWRC | ||
| 80 | STCE | STAR TRANSPORTATION CO | SCAC4 | ||
| 81 | STCG | SUMMERS TRUCKING INC | SCAC4 | ||
| 82 | STCH | SIX THREE ONE ZERO FIVE NINE ONE (6 | SCAC4 | ||
| 83 | STCI | STANLEY TRUCKING COMPANY INC | SCAC4 | ||
| 84 | STCK | SOUTHWEST TRANSPORT CO | SCAC4 | ||
| 85 | STCN | STRUCTURAL TRANSPORT INC | SCAC4 | ||
| 86 | STCO | SANDERS TRANSFER COMPANY | SCAC4 | ||
| 87 | STCX | Standard Transit Co. (General American Transportation Corp.) | Apr-38 | NRHS | |
| 88 | STCX | *GENERAL AMERICAN TRANSPORTATION CORP. [STANDARD TRANSIT CO.; STANDARD TANK CAR CO.] | PWRC | ||
| 89 | STCX | +STERLING CHINA COMPANY (CAPTIVE SERVICE) | PWRC | ||
| 90 | STCX | Standard Tank Car Co. | 8/1920-7/1923 | NAKINA | |
| 91 | STCX | Standard Tank Car Co. (Standard Transit Co.) | 7/1930-7/1932 | NAKINA | |
| 92 | STCX | Standard Transit Co. (General American Tank Car Corp.) | 7/1935 | NAKINA | |
| 93 | STCX | General American Transportation Corp. | 7/1937-1/1943 | NAKINA | |
| 94 | STCX | Sterling China Co. | 1/1980 | NAKINA | |
| 95 | STCX | Sterling China Co. (captive service) | 1/1994-7/2005 (not listed) | NAKINA | |
| 96 | STCX | Sterling China | RSRV | ||
| 97 | STCX | STERLING CHINA COMPANY | SCAC4 | ||
| 98 | STCX | Sterling China Co. | Jan-80 | NRHS | |
| 99 | STCX | Sterling China Co. (captive service) | 1/94-7/2000 | NRHS | |
| 100 | STCY | STACEY MOVING & STORAGE | SCAC4 |