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
SCA SCB SCC SCD SCE SCF SCG SCH SCI SCJ SCK SCL SCM SCN SCO SCP SCQ SCR SCS SCT SCU SCV SCW SCX SCY SCZ
SCXA SCXB SCXE SCXF SCXG SCXJ SCXK SCXN SCXO SCXT SCXU SCXV SCXW SCXY
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
SCA SCB SCC SCD SCE SCF SCG SCH SCI SCJ SCK SCL SCM SCN SCO SCP SCQ SCR SCS SCT SCU SCV SCW SCX SCY SCZ
SCXA SCXB SCXE SCXF SCXG SCXJ SCXK SCXN SCXO SCXT SCXU SCXV SCXW SCXY
| 1 | SCX | The Shasta Water Co. | 4/38-1/52 | NRHS | |
| 2 | SCX | Sun Country Airlines | IATA: SY | ICAO1 | |
| 3 | SCX | SHASTA WATER CO. | PWRC | ||
| 4 | SCX | The Shasta Water Co. | 7/1937-1/1952 | NAKINA | |
| 5 | SCXA | SOUTH CENTRAL TEXAS RAILROAD, INC. | PWRC | ||
| 6 | SCXA | ST CROIX TRANSFER INC | SCAC4 | ||
| 7 | SCXB | SUGAR CREEK TAXIDERMY STUDIO | SCAC4 | ||
| 8 | SCXE | SUNCORE XPRESS INC | SCAC4 | ||
| 9 | SCXF | South Central Florida Express, Inc. | added 1/95; added 4/95; 7/2000 | NRHS | |
| 10 | SCXF | SOUTH CENTRAL FLORIDA EXPRESS | PWRC | ||
| 11 | SCXF | South Central Florida Express, Inc. | added 1/1995; added 4/1995; 7/2000-7/2005 | NAKINA | |
| 12 | SCXF | South Central Florida Express | RSRV | ||
| 13 | SCXF | SOUTH CENTRAL FLORIDA EXPRESS INC | SCAC4 | ||
| 14 | SCXG | SUN COAST LOGISTICS LLC | SCAC4 | ||
| 15 | SCXJ | SEA CRUISE EXPRESS INC | SCAC4 | ||
| 16 | SCXK | SATCHELL CREEK EXPRESS INC | SCAC4 | ||
| 17 | SCXN | SCOTT'S EXPRESS INC. | PWRC | ||
| 18 | SCXN | SCOTTS EXPRESS INC | SCAC4 | ||
| 19 | SCXO | SCI TRANSPORT LLC | SCAC4 | ||
| 20 | SCXT | SALVESEN, CHRISTIAN TRANSPORT CO IN | SCAC4 | ||
| 21 | SCXU | ALNERY NO. 954 LIMITED (U.K.) | PWRC | ||
| 22 | SCXU | Alnery No. 954 Limited | RSRV | ||
| 23 | SCXU | SEA CONTAINERS LTD | SCAC4 | ||
| 24 | SCXV | SUPERIOR CARRIERS INC (DTL DIVISION | SCAC4 | ||
| 25 | SCXW | SIERRA FREIGHT LLC | SCAC4 | ||
| 26 | SCXY | St. Croix Valley R.R. Co. | added 1/98; 7/2000 | NRHS | |
| 27 | SCXY | ST. CROIX VALLEY RAILROAD COMPANY | PWRC | ||
| 28 | SCXY | St. Croix Valley R.R. Co. | added 1/1998; 7/2000-7/2005 | NAKINA | |
| 29 | SCXY | St. Croix Valley Railroad | RSRV | ||
| 30 | SCXY | ST CROIX VALLEY RAILROAD COMPANY | SCAC4 |