| 2201 | INL | Intal Avia | | | ICAO1 |
| 2202 | INLA | INLAND CONTAINERS CORP | | | SCAC4 |
| 2203 | INLE | INNES LIVESTOCK | | | SCAC4 |
| 2204 | INLF | INTERNATIONAL FORWARDERS INC | | | SCAC4 |
| 2205 | INLG | INTERMODAL LOGISTICS | | | SCAC4 |
| 2206 | INLH | INLINE TRANSPORTATION LLC | | | SCAC4 |
| 2207 | INLJ | IONIKOS NAVIGATION LTD | | | SCAC4 |
| 2208 | INLN | IN LINE FUEL CORP | | | SCAC4 |
| 2209 | INLP | INTERNATIONAL TRANSPORT INC | | | SCAC4 |
| 2210 | INLR | INLAND TRANSPORTATION & LOGISTICS I | | | SCAC4 |
| 2211 | INLT | INTERNATIONAL LOGISTICS TRANSPORT I | | | SCAC4 |
| 2212 | INLU | TRANSLINER PTE LTD | | SGP | BIC |
| 2213 | INLU | INTERLINE SHIPPING PTE LTD | | | SCAC4 |
| 2214 | INLW | INTRANSIT LLC | | | SCAC4 |
| 2215 | INLX | Mittel Steel USA-Incoal Inc. | added 10/2007 | | NAKINA |
| 2216 | INLX | Incoal Co. | added 10/1988; 1/1994-7/2005; eliminated 10/2007 | | NAKINA |
| 2217 | INLX | Inland Steel Co. | eliminated 10/1988 | | NAKINA |
| 2218 | INLX | Inland Steel Coal Co. | added 10/1975; 1/1980 | | NAKINA |
| 2219 | INLX | Inland Steel Co. | added 7/1968; 4/1970-1/1975; eliminated 10/1975 | | NAKINA |
| 2220 | INLX | Inland Steel Co. | added 7/68; 4/70-1/75 | | NRHS |
| 2221 | INLX | Inland Steel Coal Co. | Jan-80 | | NRHS |
| 2222 | INLX | Inland Steel Co. | eliminated 10/88 | | NRHS |
| 2223 | INLX | Incoal Co. | added 10/88; 1/94-7/2000 | | NRHS |
| 2224 | INLX | MITTAL STEEL USE - INCOAL INC. [INLAND STEEL COAL CO.] | | | PWRC |
| 2225 | INLX | Inland Steel Coal (Incoal) | | | RSRV |
| 2226 | INLX | INCOAL COMPANY | | | SCAC4 |
| 2227 | INLY | INLAND CONTRACT CARRIERS | | | SCAC4 |
| 2228 | INM | Inversiones Manduca, C.A. | Callsign: Induca, | YV | AVCODES |
| 2229 | INMA | INDUSTRIES MAIBEC INC | | | SCAC4 |
| 2230 | INMC | INDEPENDENT MOTOR CARRIER | | | SCAC4 |
| 2231 | INMD | INTERMED LTD | | | SCAC4 |
| 2232 | INMK | INTERMARK TRANSPORT INC | | | SCAC4 |
| 2233 | INML | INTERMODAL SERVICES INC | | | SCAC4 |
| 2234 | INMO | INMAN LOGISTICS LLC | | | SCAC4 |
| 2235 | INMR | INTRACOASTAL MARINE INC | | | SCAC4 |
| 2236 | INMS | INVAMEX S DE RL DE CV | | | SCAC4 |
| 2237 | INNA | INNOVATIA | | | SCAC4 |
| 2238 | INNG | INNOVATIVE FREIGHTING INC | | | SCAC4 |
| 2239 | INNI | INSIGHT NETWORK LOGISTICS | | | SCAC4 |
| 2240 | INNK | INTERNATIONAL LINK SERVICE INC | | | SCAC4 |
| 2241 | INNL | INNOVATIVE LOGISTICS SERVICES INC | | | SCAC4 |
| 2242 | INNO | INNOMATION TECHOLOGIES INC | | | SCAC4 |
| 2243 | INNR | INDUSTRIES N R C INC | | | SCAC4 |
| 2244 | INNR | Innrail Eisenbahndienstleistugen UG | | DE | VKM |
| 2245 | INNT | INNOVATIVE TRANSPORT | | | SCAC4 |
| 2246 | INNU | SEACUBE CONTAINERS LLC | | USA | BIC |
| 2247 | INNU | Seacube Container Leasing | | | RSRV |
| 2248 | INNU | SEACASTLE CONTAINER LEASING LLC | | | SCAC4 |
| 2249 | INNW | INNOTECH WINDOWS & DOORS INC | | | SCAC4 |
| 2250 | INO | Aeroservicios Integrados de Norte, S.A. de C.V. | Callsign: Intenor, | MEX | AVCODES |
| 2251 | INO | Aeroservicios Intergrados de Norte | | | ICAO1 |
| 2252 | INOC | INTEROCEAN LINES | | | SCAC1 |
| 2253 | INOC | INTEROCEAN LINES INC | | | SCAC4 |
| 2254 | INOG | INTERNATIONAL LOGISTICS TRANSPORT I | | | SCAC4 |
| 2255 | INOH | The Indiana & Ohio R.R., Inc. | 1/1994-7/2005 | | NAKINA |
| 2256 | INOH | The Indiana & Ohio Rail System | added 7/1989; added 4/1993 | | NAKINA |
| 2257 | INOH | The Indiana & Ohio Rail Corp. | eliminated 7/1989 | | NAKINA |
| 2258 | INOH | The Indiana & Ohio R.R., Inc. | added 10/1979; 1/1980; added 10/1980 | | NAKINA |
| 2259 | INOH | The Indiana & Ohio R.R., Inc. | 1/80; added 10/80 | | NRHS |
| 2260 | INOH | The Indiana & Ohio Rail Corp. | eliminated 7/89 | | NRHS |
| 2261 | INOH | The Indiana & Ohio Rail System | added 7/89; added 4/93 | | NRHS |
| 2262 | INOH | The Indiana & Ohio R.R., Inc. | 1/94-7/2000 | | NRHS |
| 2263 | INOH | INDIANA & OHIO RAILROAD, INC. | | | PWRC |
| 2264 | INOH | Indiana and Ohio Railroad | | | RSRV |
| 2265 | INOL | INMOTION LLC | | | SCAC4 |
| 2266 | INOR | The Indiana & Ohio Rail System | eliminated 7/1994; eliminated 10/1998 | | NAKINA |
| 2267 | INOR | The Indiana & Ohio Rail System | eliminated 7/94; eliminated 10/98 | | NRHS |
| 2268 | INOR | INDIANA & OHIO RAIL SYSTEM | | | PWRC |
| 2269 | INOT | IN N OUT TRANSPORT INC | | | SCAC4 |
| 2270 | INOU | INOX INDIA LTD. | | IND | BIC |
| 2271 | INOU | INOX AIR PRODUCTS LIMITED | | | SCAC4 |
| 2272 | INOX | Indiana & Ohio Rail Corp. | added 1/1995; 7/2000; eliminated 1/2002; 7/2005 (not listed) | | NAKINA |
| 2273 | INOX | Invincible Oil Corp., series 700-799, 900-999 see Montrose Oil Refining Co., Inc. | 7/1923 | | NAKINA |
| 2274 | INOX | Invincible Oil Corp. | 8/1920-7/1923 | | NAKINA |
| 2275 | INOX | Indiana & Ohio Rail Corp. | added 1/95; 7/2000 | | NRHS |
| 2276 | INOX | *INVINCIBLE OIL CORP. (MONTROSE OIL REFINING CO.) | | | PWRC |
| 2277 | INOX | +INDIANA & OHIO RAIL CORPORATION | | | PWRC |
| 2278 | INOX | Indiana and Ohio Rail Corporation | | | RSRV |
| 2279 | INOX | INDIANA & OHIO RAIL CORPORATION | | | SCAC4 |
| 2280 | INP | F A Naval Del Peru | | PE | AVCODES |
| 2281 | INP | Peruvian Navy | | | ICAO1 |
| 2282 | INPA | INTERNATIONAL PACIFIC HALIBUT COMMI | | | SCAC4 |
| 2283 | INPC | INTERNATIONAL PARCEL SERVICE LTD | | | SCAC4 |
| 2284 | INPD | INDEPENDENT DISPATCH, INC. | | | SCAC1 |
| 2285 | INPD | INDEPENDENT DISPATCH INC | | | SCAC4 |
| 2286 | INPE | IN PORT EXPERTS INC | | | SCAC4 |
| 2287 | INPJ | INTERNATIONAL NAME PLATE SUPPLIES L | | | SCAC4 |
| 2288 | INPM | INDEPENDENT FOOD CO | | | SCAC4 |
| 2289 | INPO | INTERNATIONAL PROCESS S A | | | SCAC4 |
| 2290 | INPR | Idaho Northern & Pacific R.R. Co. | 7/2000-7/2005 | | NAKINA |
| 2291 | INPR | Idaho Northern & Pacific R.R. Co. | Jul-00 | | NRHS |
| 2292 | INPR | IDAHO NORTHERN & PACIFIC RAILROAD COMPANY | | | PWRC |
| 2293 | INPR | Idaho Northern and Pacific Railroad | | | RSRV |
| 2294 | INPR | IDAHO NORTHERN & PACIFIC RAILROAD C | | | SCAC4 |
| 2295 | INPR | Idaho Northern and Pacific Railroad Company | | USA | TRAFFIC |
| 2296 | INPX | INLAND PACIFIC RAILROAD | | | PWRC |
| 2297 | INPX | INLAND PACIFIC RAILROAD | | | SCAC4 |
| 2298 | INPZ | INDUSTRIAL PAPER | | | PWRC |
| 2299 | INQA | INA OIL CO | | | SCAC4 |
| 2300 | INQD | ITDS INC | | | SCAC4 |
