Real world company prefixes
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UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UO UP UQ UR US UT UU UV UW UX UY UZ
UNA UNB UNC UND UNE UNF UNG UNH UNI UNJ UNK UNL UNM UNN UNO UNP UNQ UNR UNS UNT UNU UNV UNW UNX UNY
UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UO UP UQ UR US UT UU UV UW UX UY UZ
UNA UNB UNC UND UNE UNF UNG UNH UNI UNJ UNK UNL UNM UNN UNO UNP UNQ UNR UNS UNT UNU UNV UNW UNX UNY
| 1 | UNAA | UNIQUE FREIGHT | SCAC4 | ||
| 2 | UNAC | UNITED FUEL SERVICE | SCAC4 | ||
| 3 | UNAP | UNITED EXPRESS LTD | SCAC4 | ||
| 4 | UNAR | UNION AIR TRANSPORT GMBH | SCAC4 | ||
| 5 | UNAS | UNION AGRICOLA S A DE C V | SCAC4 | ||
| 6 | UNAU | UNITEAM AUSTRALASIA PTY LTD | SCAC4 | ||
| 7 | UNBC | UNITED BULB COMPANY | SCAC4 | ||
| 8 | UNBD | UNIONVILLEDEPOT.COM | SCAC4 | ||
| 9 | UNBL | UNITED BLOWER INC | SCAC4 | ||
| 10 | UNBX | Union Boiler Repair, Fabrication & Erection Co., Inc. | added 7/70; eliminated 10/72 | NRHS | |
| 11 | UNBX | *UNION BOILER REPAIR | PWRC | ||
| 12 | UNBX | +GENERAL ELECTRIC RAIL SERVICES CORP. | PWRC | ||
| 13 | UNBX | Union Boiler Repair, Fabrication & Erection Co., Inc. | added 7/1970; eliminated 10/1972 | NAKINA | |
| 14 | UNBX | Union Boiler Repair | added 10/1972; eliminated 11/1973 | NAKINA | |
| 15 | UNBX | General Electric Railcar Services Corp. | added 4/1999; eliminated 1/2000 | NAKINA | |
| 16 | UNBX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | NAKINA | |
| 17 | UNBX | General Electric Rail Services Corporation | RSRV | ||
| 18 | UNBX | GENERAL ELECTRIC RAILCAR SERVICES C | SCAC4 | ||
| 19 | UNBX | Union Boiler Repair | added 10/72; eliminated 11/73 | NRHS | |
| 20 | UNBX | General Electric Railcar Services Corp. | added 4/99; eliminated 1/2000 | NRHS | |
| 21 | UNBX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | NRHS | |
| 22 | UNC | Uni-Fly | ICAO1 | ||
| 23 | UNCA | UNKNOWN CANADIAN AIR CARRIER | SCAC1 | ||
| 24 | UNCA | UNITED CAB ASSOCIATION | SCAC4 | ||
| 25 | UNCB | UNITED TOTE COMPANY | SCAC4 | ||
| 26 | UNCC | UNICOLD CORPORATION | SCAC4 | ||
| 27 | UNCD | UNICEL LIMITED | SCAC4 | ||
| 28 | UNCF | UNISEA SHIPPING CV | SCAC4 | ||
| 29 | UNCG | UNION CARTAGE CO | SCAC1 | ||
| 30 | UNCH | UNICHAIRS INC | SCAC4 | ||
| 31 | UNCL | UNITED CONTAINERLINES INC | SCAC4 | ||
| 32 | UNCR | UNITED CRANE & RIGGING | SCAC4 | ||
| 33 | UNCU | UNIVERSAL CONTAINER LTD | SCAC4 | ||
| 34 | UNCX | Universal Car Co. | Apr-38 | NRHS | |
| 35 | UNCX | *CROWN CENTRAL PETROLEUM CO. [UNITED CENTRAL OIL CORP.] | PWRC | ||
| 36 | UNCX | *UNIVERSAL CAR CO. | PWRC | ||
| 37 | UNCX | *UNION CARBIDE CANADE, LTD. | PWRC | ||
| 38 | UNCX | +GATX RAIL CANADA CORP. [(CGTX)GENERAL ELECTRIC RAILCAR SERVICES CORP.] | PWRC | ||
| 39 | UNCX | United Central Oil Corp. (Crown Central Petroleum Corp.) | 7/1930 | NAKINA | |
| 40 | UNCX | Universal Car Co. | 7/1935-4/1938 | NAKINA | |
| 41 | UNCX | Union Carbide Canada Ltd., Plastics & Chemicals | added 7/1981; eliminated 4/1987 | NAKINA | |
| 42 | UNCX | General Electric Railcar Services Corp. | eliminated 4/1992 | NAKINA | |
| 43 | UNCX | CGTX, Inc. | added 4/1992; 1/1994-7/2000; eliminated 4/2002 | NAKINA | |
| 44 | UNCX | GATX Rail Canada Corp. | added 4/2002; 7/2005 | NAKINA | |
| 45 | UNCX | Union Carbide Canada | RSRV | ||
| 46 | UNCX | GATX RAIL CANADA CORPORATION | SCAC4 | ||
| 47 | UNCX | Union Carbide Canada Ltd., Plastics & Chemicals | added 7/81; eliminated 4/87 | NRHS | |
| 48 | UNCX | General Electric Railcar Services Corp. | eliminated 4/92 | NRHS | |
| 49 | UNCX | CGTX, Inc. | added 4/92; 1/94-7/2000 | NRHS | |
| 50 | UNCZ | UNIVERSAL COOPERATIVE | PWRC | ||
| 51 | UND | Atuneros Unidos de California | ICAO1 | ||
| 52 | UNDB | UNITED OCEAN LINES | SCAC4 | ||
| 53 | UNDG | UNITED LOGISTIC INC | SCAC4 | ||
| 54 | UNDH | UNDERWOOD, JEFF INC | SCAC4 | ||
| 55 | UNDI | UNITED OIL | SCAC4 | ||
| 56 | UNDO | UNITED OIL PACKERS INC | SCAC4 | ||
| 57 | UNDU | UNITAINER TRADING GMBH | SCAC4 | ||
| 58 | UNDV | UNRAU, ABE J | SCAC4 | ||
| 59 | UNDY | UNIQUE TRUCKING LTD | SCAC4 | ||
| 60 | UNEC | UNIVERSITY CORP | SCAC1 | ||
| 61 | UNER | UNITED EXPRESS | SCAC4 | ||
| 62 | UNES | UNITY EXPRESS | SCAC4 | ||
| 63 | UNEX | UNEX a.s. | CZ | VKM | |
| 64 | UNEZ | UNION ELECTRIC | PWRC | ||
| 65 | UNF | Union Flights | ICAO1 | ||
| 66 | UNFA | UNKNOWN FOREIGN AIR CARRIER | SCAC1 | ||
| 67 | UNFC | UNIVERSAL FOODS CORPORATION | SCAC1 | ||
| 68 | UNFC | UNION AFRICA LINE | SCAC4 | ||
| 69 | UNFE | UNI-FAB ENCLOSURES | SCAC4 | ||
| 70 | UNFF | UNITED TRAFFIC SERVICES INC | SCAC4 | ||
| 71 | UNFN | UNITED INTERMODE INC | SCAC4 | ||
| 72 | UNFO | UNITED FOODS INC (FREEZER QUEEN FOO | SCAC4 | ||
| 73 | UNFQ | UNFI | SCAC4 | ||
| 74 | UNFW | UNION FREIGHTWAYS | SCAC4 | ||
| 75 | UNFX | AMERICAN RAILCAR INDUSTRIES | PWRC | ||
| 76 | UNFX | American Railcar Industries | added 10/2006 | NAKINA | |
| 77 | UNFX | AMERICAN RAILCAR INDUSTRIES | SCAC4 | ||
| 78 | UNGD | UNITED GLOBAL LOGISTICS INC | SCAC4 | ||
| 79 | UNGI | UNIGAS INTERNATIONAL | SCAC4 | ||
| 80 | UNGL | UNIGLORY | SCAC1 | ||
| 81 | UNGN | UNIQUE TOOL & GAUGE INC | SCAC4 | ||
| 82 | UNHS | UNISHIPPERS | SCAC4 | ||
| 83 | UNI | Unity Railways Co. | 1/75-1/80; eliminated 7/86 | NRHS | |
| 84 | UNI | UNITY RAILWAYS | PWRC | ||
| 85 | UNI | Unity Railways Co. | 1/1975-1/1980; eliminated 7/1986 | NAKINA | |
| 86 | UNI | Unity Railways | RSRV | ||
| 87 | UNIA | UNITED AMERICAN LINES | SCAC4 | ||
| 88 | UNIC | UNITED TRUCKING COMPANY | SCAC4 | ||
| 89 | UNICZ | UNILEASING a.s. | CZ | VKM | |
| 90 | UNID | UNITED MOVING AND STORAGE INC | SCAC4 | ||
| 91 | UNIDO | UNIPETROL DOPRAVA, a.s. | CZ | VKM | |
| 92 | UNIE | UNIEXPRESS TRANSPORTATION | SCAC4 | ||
| 93 | UNIF | UNIFILT CORPORATION | SCAC4 | ||
| 94 | UNIG | UNIFI INC | SCAC4 | ||
| 95 | UNIH | UNITED HAULING CORPORATION | SCAC4 | ||
| 96 | UNIK | UNITED TRANSPORT TANK CONTAINERS IN | SCAC4 | ||
| 97 | UNIM | UNIVERSAL MAIL DELIVERY SERVICE | SCAC1 | ||
| 98 | UNIM | UNIVERSAL MAIL DELIVERY SERVICE | SCAC4 | ||
| 99 | UNIN | UNIONDALE HOLDINGS | SCAC4 | ||
| 100 | UNIO | UNITED OIL HEAT INC | SCAC4 |