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
SNA SNB SNC SND SNE SNF SNG SNH SNI SNJ SNK SNL SNM SNN SNO SNP SNQ SNR SNS SNT SNU SNV SNW SNX SNY SNZ
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
SNA SNB SNC SND SNE SNF SNG SNH SNI SNJ SNK SNL SNM SNN SNO SNP SNQ SNR SNS SNT SNU SNV SNW SNX SNY SNZ
| 1 | SN | Sacramento Northern Ry. | 10/57-1/80; eliminated 10/87 | NRHS | |
| 2 | SN | *SALINA NORTHERN RAILROAD CO. | PWRC | ||
| 3 | SN | *UNION PACIFIC RAILROAD CO. [SACRAMENTO NORTHERN RAILWAY] | PWRC | ||
| 4 | SN | Salina Northern R.R. Co. | 7/1923 | NAKINA | |
| 5 | SN | Sacramento Northern Ry. | 10/1957-1/1980; eliminated 10/1987 | NAKINA | |
| 6 | SN | Union Pacific R.R. Co. | added 10/1987; eliminated 4/1988 | NAKINA | |
| 7 | SN | Sacramento Northern Railway | RSRV | ||
| 8 | SN | Union Pacific R.R. Co. | added 10/87; eliminated 4/88 | NRHS | |
| 9 | SNA | Senator Aviation Charter | ICAO1 | ||
| 10 | SNAF | SIX TWO NINE NINE FOUR ZERO SEVEN ( | SCAC4 | ||
| 11 | SNAL | SANGHA, A TRUCKING LTD | SCAC4 | ||
| 12 | SNAM | SEVEN BROTHERS TRANSPORTATION LLC | SCAC4 | ||
| 13 | SNAN | SNARE SHOP, THE | SCAC4 | ||
| 14 | SNAP | SANDRI, A R INC | SCAC4 | ||
| 15 | SNAR | SUNRISE AG SERVICE COMPANY | SCAC4 | ||
| 16 | SNAT | SPANISH & AMERICAN TRANSPORTATION I | SCAC4 | ||
| 17 | SNAU | SMARTLAGER NORGE AS | SCAC4 | ||
| 18 | SNAV | SEASIDE NAVIGATION (USA) INC | SCAC4 | ||
| 19 | SNAX | Sociedad Nacional de Productores de Alcohol | 1/52-1/75 | NRHS | |
| 20 | SNAX | SOCIEDAD NACIONAL DE PRODUCTORES DE ALCOHOL | PWRC | ||
| 21 | SNAX | Sociedad Nacional de Productores de Alcohol | 1/1946-1/1975; eliminated 10/1975 | NAKINA | |
| 22 | SNAY | STORMIN TRANSPORT LLC | SCAC4 | ||
| 23 | SNB | Sterling Airlines | IATA: NB | ICAO1 | |
| 24 | SNB | Svendborg - Nyborg Banen (Hesselagerbanen) | 1897 - 1964 | DK | jernbanen.dk |
| 25 | SNBA | STEINMAN TRANSPORTATION LIMITED | SCAC4 | ||
| 26 | SNBB | SHANNON, B & B TRUCKING | SCAC4 | ||
| 27 | SNBD | SCHNEIDER NATIONAL CARRIERS INC (BR | SCAC4 | ||
| 28 | SNBE | SERMAPA | SCAC4 | ||
| 29 | SNBF | SNB FREIGHT LLC | SCAC4 | ||
| 30 | SNBG | SKYLINE NATIONAL BROKERAGE INC | SCAC4 | ||
| 31 | SNBH | SLOAN, ROBERT A INC | SCAC4 | ||
| 32 | SNBI | SUPER NATIONAL BERRAS (SNB) INC | SCAC4 | ||
| 33 | SNBK | SUNBURST TRUCK LINES INC | SCAC4 | ||
| 34 | SNBL | Sioux City & New Orleans Barge Line | 1/75-7/2000 | NRHS | |
| 35 | SNBL | SIOUX CITY & NEW ORLEANS BARGE LINE | PWRC | ||
| 36 | SNBL | Sioux City & New Orleans Barge Line | 1/1975-7/2005 | NAKINA | |
| 37 | SNBL | Sioux City and New Orleans Barge Line | RSRV | ||
| 38 | SNBL | SNOBELEN, TROY HOLDINGS LTD | SCAC4 | ||
| 39 | SNBM | SANTANA, HECTOR AND ANTONIO VACA | SCAC4 | ||
| 40 | SNBN | SINBANALI SHIPPING INC | SCAC4 | ||
| 41 | SNBO | SCHNEIDER NATIONAL BULK CARRIERS IN | SCAC4 | ||
| 42 | SNBP | S & B TRANSPORTATION INC | SCAC4 | ||
| 43 | SNBQ | STALLION BUS & TRANSIT | SCAC4 | ||
| 44 | SNBR | SUNBURST TRUCKING INC | SCAC4 | ||
| 45 | SNBS | SANCHEZ BAHENA, SERVANDO | SCAC4 | ||
| 46 | SNBT | SUNBURST TRANSPORTATION LLC | SCAC4 | ||
| 47 | SNBU | SINOTRANS CONTAINER LINES CO LTD | SCAC4 | ||
| 48 | SNBW | SMAIL TRUCKING LLC | SCAC4 | ||
| 49 | SNBX | Schneider Brewing Co. | 7/1935 | NAKINA | |
| 50 | SNBZ | SCHNEODER NATIONAL BULK CARRIERS IN | SCAC4 | ||
| 51 | SNC | Air Cargo Carriers | IATA: 2Q | ICAO1 | |
| 52 | SNC | SEATTLE & NORTH COAST RAILROAD | PWRC | ||
| 53 | SNCA | SANTOS CAMACHO, FLORENCIO | SCAC4 | ||
| 54 | SNCB | Société Nationale des Chemins de fer Belges | BE | VKM | |
| 55 | SNCC | SUN COAST TRANSPORT CORPORATION | SCAC4 | ||
| 56 | SNCD | SNOW, CLAYTON D INC | SCAC4 | ||
| 57 | SNCE | SAUNACORE | SCAC4 | ||
| 58 | SNCF | Société Nationale des Chemins de Fer | FR | VKM | |
| 59 | SNCF | SCHNEIDER NATIONAL CARRIERS INC-VAR | SCAC4 | ||
| 60 | SNCFT | Société Nationale des Chemins de Fer Tunésiens | TN | VKM | |
| 61 | SNCG | STONE CENTRE GRANITE & MARBLE | SCAC4 | ||
| 62 | SNCI | S & C TRANSPORT INC | SCAC4 | ||
| 63 | SNCK | SCHNEIDER NATIONAL CARRIERS INC (TR | SCAC4 | ||
| 64 | SNCL | SUNICE LOGISTICS INC | SCAC4 | ||
| 65 | SNCM | SUNLINE COMMERCIAL CARRIERS INC | SCAC4 | ||
| 66 | SNCO | Seaport Navigation | 1/75-1/80 | NRHS | |
| 67 | SNCO | SEAPORT NAVIGATION | PWRC | ||
| 68 | SNCO | Seaport Navigation | 1/1975-1/1980 | NAKINA | |
| 69 | SNCO | SPRAY NINE CORPORATION | SCAC4 | ||
| 70 | SNCQ | STILLSON OIL CO INC | SCAC4 | ||
| 71 | SNCR | S & C TRANSPORT INC | SCAC4 | ||
| 72 | SNCS | SCHNEIDER NATIONAL CARRIERS INC (TR | SCAC4 | ||
| 73 | SNCT | Seattle & North Coast R.R. Co. | added 4/80; eliminated 1/89 | NRHS | |
| 74 | SNCT | SEATTLE & NORTH COAST RAILROAD | PWRC | ||
| 75 | SNCT | Seattle & North Coast R.R. Co. | added 4/1980; eliminated 1/1989 | NAKINA | |
| 76 | SNCT | Seattle and North Coast Railroad | RSRV | ||
| 77 | SNCT | SONIC TRANSPORTATION | SCAC4 | ||
| 78 | SNCW | SUNCOAST TRANSPORT LLC | SCAC4 | ||
| 79 | SNCX | STEAMTOWN NATIONAL HISTORIC SITE | PWRC | ||
| 80 | SNCY | SCHNEIDER NATIONAL CARRIERS INC-DED | SCAC4 | ||
| 81 | SNCZ | SCHNEIDER NATIONAL LEASING | SCAC4 | ||
| 82 | SND | Air Samarkand | ICAO1 | ||
| 83 | SND | SHOWA LINE, LTD. | PWRC | ||
| 84 | SNDB | SUNLAND DISTRIBUTION COMPANY INC | SCAC4 | ||
| 85 | SNDC | SUND MANUFACTURING COMPANY | SCAC4 | ||
| 86 | SNDD | SHELDON, DAVID | SCAC4 | ||
| 87 | SNDG | STONE, DOUGLAS BERTRAN | SCAC4 | ||
| 88 | SNDI | SAN DIEGO FREIGHT SERVICE INC | SCAC4 | ||
| 89 | SNDK | SUNDVOR TRUCKING | SCAC4 | ||
| 90 | SNDL | SECOND NATURE DESIGNS LTD | SCAC4 | ||
| 91 | SNDP | SUNNYSIDE INCORPORATED | SCAC4 | ||
| 92 | SNDQ | SONIC DELIVERY INC | SCAC4 | ||
| 93 | SNDR | SANDERS INC | SCAC4 | ||
| 94 | SNDS | SANDOR RENOVATIONS & DESIGN | SCAC4 | ||
| 95 | SNDU | Sandcan | RSRV | ||
| 96 | SNDV | SANDOVAL, W TRUCKING | SCAC4 | ||
| 97 | SNDX | SOUNDER COMMUTER RAIL | PWRC | ||
| 98 | SNE | Servicios Aereos De Nicaragua (SANSA) | ICAO1 | ||
| 99 | SNEC | SINES ENTERPRISES INC | SCAC4 | ||
| 100 | SNED | SANFRED ENTERPRISES INCORPORATED | SCAC4 |