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
H& H0 H1 H2 H3 H4 H5 H6 H7 H8 H9 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ
HOA HOB HOC HOD HOE HOF HOG HOH HOI HOJ HOK HOL HOM HON HOO HOP HOQ HOR HOS HOT HOU HOV HOW HOX HOY HOZ
HOUA HOUB HOUC HOUD HOUF HOUG HOUH HOUI HOUS HOUT HOUU HOUV HOUX
1 HOUX PPG Industries, Inc. 1/1975-1/1980   NAKINA
2 HOUX Houston Chemical Corp. added 10/1964; eliminated 7/1965; added 4/1966; 10/1966-4/1970; eliminated 4/1971   NAKINA
3 HOUX PPG Industries, Inc. 1/75-1/80   NRHS
4 HOUX Houston Chemical Corp. eliminated 7/65; added 4/66; 10/66-4/70; eliminated 4/71   NRHS
5 HOUX PPG INDUSTRIES, INC. [HOUSTON CHEMICAL CORP.]     PWRC