| 1 | ECI | Eastern Carolina Aviation, Inc. | Callsign: Eastern Carolina, | USA | AVCODES |
| 2 | ECI | Eastern Carolina Aviation | | | ICAO1 |
| 3 | ECIA | EAST CENTRAL IOWA COOPERATIVE | | | SCAC4 |
| 4 | ECIC | EXPRESS CARGO INC | | | SCAC4 |
| 5 | ECID | ECO INTERMODAL | | | SCAC4 |
| 6 | ECIDA | ERIE COUNTY INDUSTRIAL DEVELOPMENT AGENCY | | | PWRC |
| 7 | ECIH | EXECUTIVE COACH INC | | | SCAC4 |
| 8 | ECII | ECOLOGY CONTROL INDUSTRIES INC | | | SCAC4 |
| 9 | ECIL | EXPRESS CARGO INC (LANDSTAR | | | SCAC4 |
| 10 | ECIM | EAST COAST INTERMODDAL SYSTEMS OF C | | | SCAC3 |
| 11 | ECIN | EASTERN CARTAGE INC | | | SCAC3 |
| 12 | ECIN | EXCLUSIVE CARTAGE INC | | | SCAC4 |
| 13 | ECIR | EZ CARRIERS INC | | | SCAC4 |
| 14 | ECIS | EAST COAST INTERMODAL SYSTEMS INC | | | SCAC3 |
| 15 | ECISA | Ecisa, Compaňia general de construcciones, S.A | | ES | VKM |
| 16 | ECIT | EXPRESS CRT INC | | | SCAC4 |
| 17 | ECIU | ECEM BV | | NL | BIC |
| 18 | ECIU | REYNOLDS LOGISTICS | | | SCAC4 |
| 19 | ECIX | Erman Corp., Inc. | added 1/1962; 7/1965-1/1980; eliminated 5/1983; 7/2000-7/2005 (not listed) | | NAKINA |
| 20 | ECIX | Erman Corp., Inc. | added 1/62; 7/65-1/80; eliminated 5/83; 7/2000 | | NRHS |
| 21 | ECIX | ERMAN CORP. | | | PWRC |
| 22 | ECIX | Erman Corporation | | | RSRV |
| 23 | ECIX | ERMAN CORP INC | | | SCAC3 |
| 24 | ECIX | ERMAN CORPORATION INC | | | SCAC4 |
| 25 | ECIZ | ERIE COUNTY INDUSTRIAL DEVELOPMENT AGENCY | | | PWRC |
