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
SSA SSB SSC SSD SSE SSF SSG SSH SSI SSJ SSK SSL SSM SSN SSO SSP SSQ SSR SSS SST SSU SSV SSW SSX SSY SSZ
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
SSA SSB SSC SSD SSE SSF SSG SSH SSI SSJ SSK SSL SSM SSN SSO SSP SSQ SSR SSS SST SSU SSV SSW SSX SSY SSZ
| 1 | SS | Sand Springs Ry. Co. | 1/75-1/80; added 1/94; 7/2000 | NRHS | |
| 2 | SS | SAND SPRINGS RAILWAY COMPANY | PWRC | ||
| 3 | SS | Sand Springs Ry. Co. | 1/1975-1/1980; added 1/1994; 7/2000-7/2005 | NAKINA | |
| 4 | SS | Sand Springs Railway | RSRV | ||
| 5 | SS | SAND SPRINGS RAILWAY COMPANY | SCAC4 | ||
| 6 | SSAA | SALT SPRING AIR | SCAC4 | ||
| 7 | SSAB | SSAB Tunnplåt AB | SE | VKM | |
| 8 | SSAC | SS TRUCKING | SCAC4 | ||
| 9 | SSAG | SSB TRUCKING LTD | SCAC4 | ||
| 10 | SSAK | SMYTH MOVING SERVICE OF ALASKA INC | SCAC4 | ||
| 11 | SSAL | SOTO SALAS, GERARDO | SCAC4 | ||
| 12 | SSAM | Sault Ste. Marie Bridge Co. | added 4/93; 1/94-7/2000 | NRHS | |
| 13 | SSAM | SAULT STE. MARIE BRIDGE COMPANY (WISCONSIN CENTRAL SUBSIDIARY) | PWRC | ||
| 14 | SSAM | Sault Ste. Marie Bridge Co. | added 4/1993; 1/1994-7/2005 | NAKINA | |
| 15 | SSAM | Sault Ste. Marie Bridge (Wisconsin Central) | RSRV | ||
| 16 | SSAM | SAULT STE MARIE BRIDGE | SCAC4 | ||
| 17 | SSAN | STUART, S ANTIQUES | SCAC4 | ||
| 18 | SSAP | SOS TRANSPORTATION LLC | SCAC4 | ||
| 19 | SSAT | SOLANO GONZALEZ, SANTIAGO | SCAC4 | ||
| 20 | SSAV | SECURITY STORAGE AND VAN COMPANY | SCAC4 | ||
| 21 | SSAY | SOUTHERN STEAMSHIP AGENCY INC | SCAC4 | ||
| 22 | SSB | Sasair | ICAO1 | ||
| 23 | SSBD | SUNDANCE SEAFOOD LTD | SCAC4 | ||
| 24 | SSBF | SOSEBEE FREIGHT LINE, INC | SCAC1 | ||
| 25 | SSBJ | SCOTT STREET TOMATO HOUSE INC | SCAC4 | ||
| 26 | SSBL | SELECT SHOWS BLUE UNIT LTD | SCAC4 | ||
| 27 | SSBO | SMOOTH SHIPPING | SCAC4 | ||
| 28 | SSBQ | SAN SILVESTRE FLETES Y ACARREOS | SCAC4 | ||
| 29 | SSBR | SBS SPECIALIZED INC | SCAC4 | ||
| 30 | SSBT | SILVER STREAK BOATS LTD | SCAC4 | ||
| 31 | SSBU | SPECIALIST SERVICES LLC | SCAC4 | ||
| 32 | SSBV | SEPSA S A DE CV | SCAC4 | ||
| 33 | SSBX | SUN SHIPBUILDING CO. | PWRC | ||
| 34 | SSBX | Sun Shipbuilding Co. | 8/1920 | NAKINA | |
| 35 | SSBY | STANSHIPS INC | SCAC4 | ||
| 36 | SSC | Southern Switching Co. | added 1/95; eliminated 7/96; 7/2000 | NRHS | |
| 37 | SSC | Southern Seaplane | ICAO1 | ||
| 38 | SSC | SOUTHERN SWITCHING COMPANY (STOCKYARDS SERVICE COMPANY) | PWRC | ||
| 39 | SSC | Southern Switching Co. | added 1/1995; eliminated 7/1996; 7/2000-7/2005 | NAKINA | |
| 40 | SSC | Southern Switching | RSRV | ||
| 41 | SSC | SOUTHERN SWITCHING COMPANY | SCAC4 | ||
| 42 | SSCA | SEVEN SEAS CARRIERS AS | SCAC4 | ||
| 43 | SSCC | SERRA, S CHEESE CO | SCAC4 | ||
| 44 | SSCD | S S CHAD EXPRESS LLC | SCAC4 | ||
| 45 | SSCE | SUPERIOR SEAFOODS COMPANY INC | SCAC4 | ||
| 46 | SSCF | SCHNEIDER NATIONAL CARRIERS INC (CO | SCAC4 | ||
| 47 | SSCH | SUNSHINE CHARTERS INC | SCAC4 | ||
| 48 | SSCI | SECURITY STORAGE COMPANY OF CHARLOT | SCAC4 | ||
| 49 | SSCK | S & S TRUCKING | SCAC4 | ||
| 50 | SSCN | SSC TRANSPORTS INC | SCAC4 | ||
| 51 | SSCO | SHOTA SHIPPING CO.,LTD. | SCAC4 | ||
| 52 | SSCP | SOUTHERN STATES COOPERATIVE INC | SCAC4 | ||
| 53 | SSCR | SLADOVNY SOUFFLET ČR a.s. | CZ | VKM | |
| 54 | SSCS | SPECTRUM SUPPLY CHAIN SOLUTIONS INC | SCAC4 | ||
| 55 | SSCT | SISCO TRUCKING | SCAC4 | ||
| 56 | SSCU | STATES STEAMSHIP CO. | PWRC | ||
| 57 | SSCU | States Steamship | RSRV | ||
| 58 | SSCU | STATES STEAMSHIP COMPANY | SCAC4 | ||
| 59 | SSCX | Southern States Chemical Co. | added 7/63; 7/65-10/66; eliminated 10/67 | NRHS | |
| 60 | SSCX | *STOCKYARDS SERVICE COMPANY | PWRC | ||
| 61 | SSCX | *SOUTHERN STATES CHEMICAL CO. | PWRC | ||
| 62 | SSCX | *SOUTHERN STONE CO., INC. | PWRC | ||
| 63 | SSCX | Southern States Chemical Co. | added 7/1963; 7/1965-10/1966; eliminated 10/1967 | NAKINA | |
| 64 | SSCX | Southern Stone Co., Inc. | added 4/1971; 1/1975; eliminated 7/1979 | NAKINA | |
| 65 | SSCX | SOUTHERN STONE COMPANY | SCAC4 | ||
| 66 | SSCX | Southern Stone Co., Inc. | added 4/71; 1/75; eliminated 7/79 | NRHS | |
| 67 | SSCY | SCHAPER SERVICES CO THE | SCAC4 | ||
| 68 | SSCZ | (SSCU) STATES STEAMSHIP CO. | PWRC | ||
| 69 | SSCZ | States Steamship | RSRV | ||
| 70 | SSCZ | STATES STEAMSHIP CO. | SCAC4 | ||
| 71 | SSD | Star Service International | ICAO1 | ||
| 72 | SSD | UNION PACIFIC RAILROAD COMPANY | PWRC | ||
| 73 | SSD | Union Pacific Railroad | RSRV | ||
| 74 | SSDB | SIMON & SIMON FREIGHT TRUCKING LLC | SCAC4 | ||
| 75 | SSDC | SEASIDE CARRIERS CORP | SCAC4 | ||
| 76 | SSDD | SSD DISTRIBUTION SYSTEM INC | SCAC4 | ||
| 77 | SSDE | SAFE & SECURE INDUSTRIES LLC | SCAC4 | ||
| 78 | SSDF | SERVICES SANITAIRES DENIS FORTIER I | SCAC4 | ||
| 79 | SSDI | SCHLEESE SADDLERY SERVICE LTD | SCAC4 | ||
| 80 | SSDK | Savannah State Docks R.R. Co. | 1/75; added 4/79; 1/80-1/94; eliminated 1/99; 7/2000 | NRHS | |
| 81 | SSDK | SAVANNAH STATE DOCKS RAILROAD | PWRC | ||
| 82 | SSDK | Savannah State Docks R.R. Co. | 1/1975; added 4/1979; 1/1980-1/1994; eliminated 1/1999; 7/2000 | NAKINA | |
| 83 | SSDK | Savannah State Docks Railroad | RSRV | ||
| 84 | SSDK | SILVER STAR AGENCIES B V | SCAC4 | ||
| 85 | SSDL | S&S DELIVERY, INC | SCAC1 | ||
| 86 | SSDL | SLS DELIVERY SERVICES INC | SCAC4 | ||
| 87 | SSDM | S S LOGISTICS INC | SCAC4 | ||
| 88 | SSDO | SELLERS PETROLEUM | SCAC4 | ||
| 89 | SSDR | SPETH DRILLING | SCAC4 | ||
| 90 | SSDS | SMITH SEED SERVICES | SCAC4 | ||
| 91 | SSDV | STRAIGHT SHOT DELIVERIES LLC | SCAC4 | ||
| 92 | SSE | Servicios Aereos Sunset | ICAO1 | ||
| 93 | SSEB | SAMS EXPRESS | SCAC4 | ||
| 94 | SSED | S & S TRANSPORTATION SERVICES INC | SCAC4 | ||
| 95 | SSEE | SURE SHOT EXPRESS INC | SCAC4 | ||
| 96 | SSEG | SENSENIG TRUCKING INC | SCAC4 | ||
| 97 | SSEI | SPECIALIZED SERVICE EXPRESS INC | SCAC4 | ||
| 98 | SSEJ | SUNITRANS LOGISTICS PRIVATE LIMITED | SCAC4 | ||
| 99 | SSEL | SON SEEKER EXPRESS | SCAC4 | ||
| 100 | SSEN | SIERRA STAGE COACHES INC | SCAC4 |