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
UUA UUI UUS UUU
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
UUA UUI UUS UUU
| 1 | UUAX | Up-Up & Away, Inc. | 1/94; added 1/97; eliminated 4/97; 7/2000 | NRHS | |
| 2 | UUAX | UP-UP & AWAY, INC. | PWRC | ||
| 3 | UUAX | Up-Up & Away, Inc. | 1/1994 (not listed); added 1/1997; eliminated 4/1997; 7/2000-7/2005 (not listed) | NAKINA | |
| 4 | UUAX | Up-Up and Away | RSRV | ||
| 5 | UUAX | UP-UP & AWAY, INC. | SCAC4 | ||
| 6 | UUIC | UNICAR USA INC | SCAC4 | ||
| 7 | UUSA | UNIVAR USA INC | SCAC4 | ||
| 8 | UUUU | UITERWYK CORPORATION | SCAC4 | ||
| 9 | UUUZ | UITERWYK CORP. | PWRC | ||
| 10 | UUUZ | Uiterwyk Corporation | RSRV | ||
| 11 | UUUZ | UITERWYK CORP. | SCAC4 |