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
P& P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ
PR& PRA PRB PRC PRD PRE PRF PRG PRH PRI PRJ PRK PRL PRM PRN PRO PRP PRQ PRR PRS PRT PRU PRV PRW PRX PRY PRZ
PRTA PRTC PRTD PRTE PRTF PRTG PRTH PRTJ PRTK PRTL PRTM PRTO PRTQ PRTR PRTS PRTT PRTU PRTV PRTX PRTY PRTZ
1 PRTD Portland Traction Co. added 10/1989; eliminated 7/1992; 1/1994-7/2005   NAKINA
2 PRTD Portland Traction Co., Portland R.R. and Terminal Division 10/1957-1/1980; eliminated 10/1989   NAKINA
3 PRTD Portland Traction Co., Portland R.R. and Terminal Division 10/57-1/80; eliminated 10/89   NRHS
4 PRTD Portland Traction Co. added 10/89; eliminated 7/92; 1/94-7/2000   NRHS
5 PRTD PORTLAND TRACTION COMPANY     PWRC
6 PRTD Portland Traction     RSRV
7 PRTD PORTLAND TRACTION COMPANY     SCAC3