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
M& M- M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ
MH& MHA MHB MHC MHD MHE MHF MHG MHH MHI MHJ MHK MHL MHM MHN MHO MHP MHQ MHR MHS MHT MHU MHV MHW MHX MHY MHZ
MHHC MHHI MHHL MHHR MHHT MHHU MHHV MHHX
1 MHHR Mahanoy and Hazleton Ry., Inc. added 7/1985; eliminated 10/1986   NAKINA
2 MHHR MAHANOY & HAZLETON RWY., INC.     PWRC