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
PTA PTB PTC PTD PTE PTF PTG PTH PTI PTJ PTK PTL PTM PTN PTO PTP PTQ PTR PTS PTT PTU PTV PTW PTX PTY PTZ
PTRA PTRB PTRC PTRD PTRF PTRG PTRH PTRI PTRJ PTRK PTRM PTRN PTRO PTRP PTRQ PTRR PTRS PTRT PTRU PTRV PTRW PTRX PTRY
1 PTRR Port Townsend R.R., Inc. added 7/1974; 1/1975-7/2005   NAKINA
2 PTRR Port Townsend R.R. (R.S. Fox, Owner) eliminated 7/1974   NAKINA
3 PTRR Port Townsend R.R., Inc. 1/75-7/2000   NRHS
4 PTRR PORT TOWNSEND RAILROAD     PWRC
5 PTRR Port Townsend Railroad     RSRV
6 PTRR PETERS, R E & SONS TRANSPORTATION I     SCAC3
7 PTRR PLETT, R R TRUCKING LTD     SCAC4