Real world company prefixes
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I& IA IB IC ID IE IF IG IH II IJ IK IL IM IN IO IP IQ IR IS IT IU IV IW IX IY IZ
IOA IOC IOE IOI IOL IOM ION IOP IOR IOS IOT IOX IOZ
I& IA IB IC ID IE IF IG IH II IJ IK IL IM IN IO IP IQ IR IS IT IU IV IW IX IY IZ
IOA IOC IOE IOI IOL IOM ION IOP IOR IOS IOT IOX IOZ
| 1 | IOA | Iowa Airways | ICAO1 | ||
| 2 | IOCA | IOC TRUCKING | SCAC4 | ||
| 3 | IOCB | INFINITO INC | SCAC4 | ||
| 4 | IOCC | QUEBEC NORTH SHORE & LABRADOR | PWRC | ||
| 5 | IOCC | INDEPENDENT OIL & COAL COMPANY | SCAC4 | ||
| 6 | IOCM | IRMAS CREATIONS | SCAC4 | ||
| 7 | IOCP | INDEPENDENT OIL COMPANY | SCAC4 | ||
| 8 | IOCR | The Indiana & Ohio Central R.R., Inc. | added 1/88; 1/94 | NRHS | |
| 9 | IOCR | INDIANA & OHIO RAILWAY [INDIANA & OHIO CENTRAL RAILROAD, INC] | PWRC | ||
| 10 | IOCR | The Indiana & Ohio Ry. | added 7/2005; 7/2005 | NAKINA | |
| 11 | IOCR | The Indiana & Ohio Central R.R. | added 7/1999; 7/2000; eliminated 7/2005 | NAKINA | |
| 12 | IOCR | The Indiana & Ohio Rail System | eliminated 7/1999 | NAKINA | |
| 13 | IOCR | The Indiana & Ohio Central R.R., Inc. | added 1/1988; 1/1994 | NAKINA | |
| 14 | IOCR | Indiana and Ohio Central Railroad | RSRV | ||
| 15 | IOCR | The Indiana & Ohio Rail System | eliminated 7/99 | NRHS | |
| 16 | IOCR | The Indiana & Ohio Central R.R. | added 7/99; 7/2000 | NRHS | |
| 17 | IOCT | INTEROCEAN TRADE AND TRANSPORTATION | SCAC4 | ||
| 18 | IOCX | Illinois Oil Co. | Apr-38 | NRHS | |
| 19 | IOCX | *ILLINOIS OIL CO.. | PWRC | ||
| 20 | IOCX | +RAIL ENTERPRISES INCORPORATED | PWRC | ||
| 21 | IOCX | Rail Enterprises, Inc. | added 10/1997; eliminated 4/1998; 7/2000-7/2005 (not listed) | NAKINA | |
| 22 | IOCX | Illinois Oil Co. | 8/1920-1/1945 | NAKINA | |
| 23 | IOCX | Illinois Oil Co. (Rail Enterprises) | RSRV | ||
| 24 | IOCX | RAIL ENTERPRISES INC (ACTING AGENT | SCAC4 | ||
| 25 | IOCX | Rail Enterprises, Inc. | added 10/97; eliminated 4/98; 7/2000 | NRHS | |
| 26 | IOCY | IOC COMPANY LLC | SCAC4 | ||
| 27 | IOEP | I O EXPRESS INC | SCAC4 | ||
| 28 | IOER | The Indiana & Ohio Eastern R.R., Inc. | added 1/88; 1/94 | NRHS | |
| 29 | IOER | RETIRED 01-05-94 ATP (979) [INDIANA & OHIO EASTERN RAILROAD] | PWRC | ||
| 30 | IOER | Indiana & Ohio Rail System | eliminated 10/1994 | NAKINA | |
| 31 | IOER | The Indiana & Ohio Eastern R.R., Inc. | added 1/1988; 1/1994 | NAKINA | |
| 32 | IOER | INTER-ONTARIO EQUIPMENT RENTAL & RE | SCAC4 | ||
| 33 | IOER | Indiana & Ohio Rail System | eliminated 10/94 | NRHS | |
| 34 | IOIL | IRVING OIL LIMITED | SCAC4 | ||
| 35 | IOLL | INDEPENDENT OPERATORS LLC | SCAC4 | ||
| 36 | IOLU | TEXTAINER EQUIPMENT MANAGEMENT (U.S.) LTD. | PWRC | ||
| 37 | IOLU | Textainer Equipment Management | RSRV | ||
| 38 | IOM | Island Aviation and Travel | ICAO1 | ||
| 39 | IOMC | INTEROCEAN MANAGMENT CORP. | SCAC4 | ||
| 40 | IOMX | IMERYS OILFIELD MINERALS INC | SCAC4 | ||
| 41 | IONA | IONIA MANAGEMENT S A | SCAC4 | ||
| 42 | IONR | ION-TRACE INC | SCAC4 | ||
| 43 | IONY | INDIAGEMS OF NEW YORK INC | SCAC4 | ||
| 44 | IOPU | CANTREYN, LTD | SCAC3 | ||
| 45 | IOPX | Iowa Power & Light Co. | 1/80; eliminated 4/93 | NRHS | |
| 46 | IOPX | MIDAMERICAN ENERGY CO [MIDWEST POWER SYSTEMS; IOWA POWER & LIGHT] | PWRC | ||
| 47 | IOPX | MidAmerican Energy Co. | added 4/1996; 7/2000-7/2005 | NAKINA | |
| 48 | IOPX | Midwest Power Systems | added 4/1993; 1/1994; eliminated 4/1996 | NAKINA | |
| 49 | IOPX | Iowa Power & Light Co. | added 4/1977; 1/1980; eliminated 4/1993 | NAKINA | |
| 50 | IOPX | Iowa Power and Light (MidAmerican Energy) | RSRV | ||
| 51 | IOPX | Midwest Power Systems | added 4/93; 1/94; eliminated 4/96 | NRHS | |
| 52 | IOPX | MidAmerican Energy Co. | added 4/96; 7/2000 | NRHS | |
| 53 | IOPZ | IOWA PUBLIC SERVICE | PWRC | ||
| 54 | IORX | *INDIAHOMA REFINING CO. | PWRC | ||
| 55 | IORX | *INDIANA & OHIO RAILWAY - PASSENGER SVC. | PWRC | ||
| 56 | IORX | Indiahoma Refining Co. | 8/1920-7/1923 | NAKINA | |
| 57 | IORY | The Indiana & Ohio Ry. Co. | added 1/88; 1/94 | NRHS | |
| 58 | IORY | INDIANA & OHIO RAILWAY COMPANY | PWRC | ||
| 59 | IORY | The Indiana & Ohio Ry. | added 7/1999; 7/2000-7/2005 | NAKINA | |
| 60 | IORY | The Indiana & Ohio Rail System | eliminated 7/1999 | NAKINA | |
| 61 | IORY | The Indiana & Ohio Ry. Co. | added 1/1988; 1/1994 | NAKINA | |
| 62 | IORY | Indiana and Ohio Railway | RSRV | ||
| 63 | IORY | INDIANA & OHIO RAILWAY COMPANY | SCAC4 | ||
| 64 | IORY | The Indiana & Ohio Rail System | eliminated 7/99 | NRHS | |
| 65 | IORY | The Indiana & Ohio Ry. | added 7/99; 7/2000 | NRHS | |
| 66 | IOS | Isles of Scilly Skybus | ICAO1 | ||
| 67 | IOSC | INTEROCEAN STEAMSHIP CORPORATION, S | SCAC4 | ||
| 68 | IOSF | IOSCO TRUCKING INC | SCAC4 | ||
| 69 | IOSX | *INTERSTATE OIL SHIPPERS LINE | PWRC | ||
| 70 | IOSX | *INDIANA & OHIO SCENIC RAIL CORP. | PWRC | ||
| 71 | IOSX | Interstate Oil Shippers Line | 7/1923 | NAKINA | |
| 72 | IOTA | IOTA | SCAC4 | ||
| 73 | IOTC | INTERNATIONAL ORDNANCE TECHNOLOGIES | SCAC4 | ||
| 74 | IOTG | IBISEVIC, OMER TRUCKING | SCAC4 | ||
| 75 | IOTK | INDENT OILFIELD TRUCKING | SCAC4 | ||
| 76 | IOTL | I O TRUCKING LLC | SCAC4 | ||
| 77 | IOTN | INDIAN ORCHARD TRUCKING INC | SCAC4 | ||
| 78 | IOTP | IN AND OUT TRANSPORT | SCAC4 | ||
| 79 | IOTX | INTER OCEAN REFINING CO. | PWRC | ||
| 80 | IOTX | Inter Ocean Refining Co. | 8/1920-7/1923 | NAKINA | |
| 81 | IOX | Imperial Oil, Ltd. | Apr-38 | NRHS | |
| 82 | IOX | *IMPERIAL OIL, LTD. | PWRC | ||
| 83 | IOX | *UNION TANK CAR CO. (TRANSIT CO., LTD.) | PWRC | ||
| 84 | IOX | Transit Co., Ltd. | added 10/1957; 10/1957-1/1975; eliminated 10/1975; 1/1980 | NAKINA | |
| 85 | IOX | Union Tank Car Co. | added 10/1953; 7/1954; eliminated 10/1957 | NAKINA | |
| 86 | IOX | Transit Co., Ltd. | 1/1952; eliminated 10/1953 | NAKINA | |
| 87 | IOX | Imperial Oil, Ltd. | 8/1920-1/1950 | NAKINA | |
| 88 | IOX | Transit Co., Ltd. | 1/52; eliminated 10/53 | NRHS | |
| 89 | IOX | Union Tank Car Co. | added 10/53; eliminated 10/57 | NRHS | |
| 90 | IOX | Transit Co., Ltd. | added 10/57; 10/57-1/80 | NRHS | |
| 91 | IOXP | INTEROCEAN EXPRESS CORPORATION | SCAC4 | ||
| 92 | IOZL | I-ONE ZERO (I-10) LOGISTICS LLC | SCAC4 |