Real world company prefixes

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M n O P Q R S T U V W X Y Z Ø
D D& D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DY DZ
DOA DOB DOC DOD DOE DOF DOG DOH DOI DOJ DOK DOL DOM DON DOO DOP DOR DOS DOT DOU DOV DOW DOX DOY DOZ
DOTB DOTC DOTI DOTJ DOTK DOTO DOTQ DOTR DOTS DOTV DOTX
1 DOTX USDOT/Federal Railroad Administration 7/2000-7/2005 (not listed)   NAKINA
2 DOTX USDOT/Federal Railroad Administration Jul-00   NRHS
3 DOTX U.S. DEPT OF TRANSPORTATION - FEDERAL RAILROAD ADMIN.     PWRC
4 DOTX United States Department of Transportation (Federal Railroad Administration)     RSRV
5 DOTX USDOT/FEDERAL RAILROAD ADMINISTRATI     SCAC4
6 DOTX USDOT/Federal Railroad Administration   USA TRAFFIC