| 3001 | REYY | REYES TRUCKING | SCAC4 | ||
| 3002 | REZ | Cal-West Aviation | ICAO1 | ||
| 3003 | REZ | RALSTON ELEVATOR | PWRC | ||
| 3004 | REZE | REZENDES, K R INC | SCAC3 | ||
| 3005 | REZE | REZENDES, K R INC | SCAC4 | ||
| 3006 | REZK | REITZ TRUCKING | SCAC3 | ||
| 3007 | REZK | REDETZKE CONSTRUCTION INC | SCAC4 | ||
| 3008 | REZL | RETZLOFF MOVING & STORAGE CO | SCAC3 | ||
| 3009 | RF | RENFE | E | TRAFFIC | |
| 3010 | RF | Railflex GmbH | DE | VKM | |
| 3011 | RF&P | Richmond, Fredricksburg & Potomac R.R. Co. | 8/1920-7/1936 | NAKINA | |
| 3012 | RF&P | RICHMOND, FREDERICKSBURG & POTOMAC RR (NOW CSX TRANSPORTATION) | PWRC | ||
| 3013 | RFA | Raleigh Flying Service | ICAO1 | ||
| 3014 | RFAA | ROBINSON FARMS | SCAC4 | ||
| 3015 | RFAB | REMFILS A-2-B TRANSPORT | SCAC4 | ||
| 3016 | RFAC | REFRIGERADOS ACEVEDO | SCAC4 | ||
| 3017 | RFAE | U. S. DEPT. OF ENERGY ROCKY FLATS PLANT | PWRC | ||
| 3018 | RFAK | REMARK FARMS | SCAC4 | ||
| 3019 | RFAR | RITTER FARMS | SCAC4 | ||
| 3020 | RFAV | RICKS FRAME AND COLLISION SERVICE | SCAC4 | ||
| 3021 | RFB | Ringe - Fåborg Banen (Fåborgbanen) | 1882 - 1962 | DK | jernbanen.dk |
| 3022 | RFB | Ringe - Fåborg Banen (Fåborgbanen) | 1882 - 1962 | DK | TRAFFIC |
| 3023 | RFB | ROMPLUMB SA | RO | VKM | |
| 3024 | RFBD | RALCORP FROZEN BAKERY PRODUCTS | SCAC4 | ||
| 3025 | RFBG | RIFENBURG TRUCKING INC | SCAC4 | ||
| 3026 | RFBI | REXIUS FOREST BY-PRODUCTS INC | SCAC4 | ||
| 3027 | RFBK | RAPID FREIGHT BROKER SOLUTIONS | SCAC4 | ||
| 3028 | RFBL | REFRIGERADOS BALDERAS | SCAC4 | ||
| 3029 | RFBP | REXIUS FOREST BY-PRODUCTS INC | SCAC3 | ||
| 3030 | RFBS | REGIONAL FLATBED SERVICE LLC | SCAC4 | ||
| 3031 | RFBV | ROWE FREIGHT BROKER SERVICES LLC | SCAC4 | ||
| 3032 | RFC | Aero Africa | ICAO1 | ||
| 3033 | RFCA | R & F CARRIERS LLC | SCAC4 | ||
| 3034 | RFCD | ROADMASTER FREIGHT COMPANIES LLC | SCAC4 | ||
| 3035 | RFCF | RELIABLE FREIGHT CARRIERS | SCAC4 | ||
| 3036 | RFCG | RIVERFRONT CARTAGE COMPANY OF OHIO | SCAC3 | ||
| 3037 | RFCI | ROYAL FREIGHT CARRIERS INC | SCAC3 | ||
| 3038 | RFCM | ROUSSEAU FARMING CO | SCAC4 | ||
| 3039 | RFCN | R F C WORLD WIDE INC | SCAC3 | ||
| 3040 | RFCN | ROCKLAND FUEL CARRIER | SCAC4 | ||
| 3041 | RFCO | ROYAL FOODS CO INC | SCAC3 | ||
| 3042 | RFCP | RECYCLED FIBERS CORP OF NJ | SCAC3 | ||
| 3043 | RFCP | RUOFF & COMPANY INC | SCAC4 | ||
| 3044 | RFCR | REFAC INDUSTRIAL CONTRACTORS INC | SCAC4 | ||
| 3045 | RFCS | REEFER CARGO SERVICES AGENCY | SCAC3 | ||
| 3046 | RFCT | R F C TRANSPORTATION SERVICE | SCAC3 | ||
| 3047 | RFCT | REFURBISHED CONTAINER SYSTEMS | SCAC4 | ||
| 3048 | RFCT | Rail4Chem Transalpin AG | CH | VKM | |
| 3049 | RFCU | RAFFLES LEASE PTE LTD | SCAC4 | ||
| 3050 | RFCV | ROCKY FREIGHT & CRANE SERVICES LTD | SCAC4 | ||
| 3051 | RFCW | RFC WORLD WIDE | SCAC3 | ||
| 3052 | RFCW | RLF TRUCKING INC | SCAC4 | ||
| 3053 | RFCX | R&F Coal Co. | added 7/1980; eliminated 7/1991 | NAKINA | |
| 3054 | RFCX | Rentco Division, Fruehauf Corp. | added 4/1967; 4/1970; eliminated 7/1972 | NAKINA | |
| 3055 | RFCX | Rentco Division, Fruehauf Corp. | added 4/67; 4/70 | NRHS | |
| 3056 | RFCX | R&F Coal Co. | added 7/80; eliminated 7/91 | NRHS | |
| 3057 | RFCX | *RENTCO DIV., FRUEHAUF CORP. | PWRC | ||
| 3058 | RFCX | *R & F COAL CO. (RETIRED 06-17-91) | PWRC | ||
| 3059 | RFCX | +ROTHSAY FARMERS CO-OPERATIVE | PWRC | ||
| 3060 | RFCX | R&F Coal | RSRV | ||
| 3061 | RFCX | ROTHSAY FARMERS CO-OPERATIVE | SCAC4 | ||
| 3062 | RFCY | RUTLAND FUEL CO | SCAC4 | ||
| 3063 | RFD | Aerotransportes Rafilher | ICAO1 | ||
| 3064 | RFD | Railfreight Distribution | GB | TRAFFIC | |
| 3065 | RFDI | RELIABLE FREIGHT DISTRIBUTORS INC | SCAC4 | ||
| 3066 | RFDL | RAFTER T LIMITED | SCAC4 | ||
| 3067 | RFDN | RAEFORD TRUCKING | SCAC4 | ||
| 3068 | RFDW | RANCHO FLORES DEL OESTE - FLORAWEST | SCAC4 | ||
| 3069 | RFEI | RED FEATHER EXPRESS INC | SCAC4 | ||
| 3070 | RFEN | R F ENTERPRISES | SCAC4 | ||
| 3071 | RFEO | REYNA, FERNANDO | SCAC4 | ||
| 3072 | RFEQ | RICE FARM EQUIPMENT | SCAC4 | ||
| 3073 | RFER | REEFER XPRESS | SCAC4 | ||
| 3074 | RFES | REFRIGERATED EXPRESS SERVICE | SCAC3 | ||
| 3075 | RFES | REFRIGERATED EXPRESS SERVICE | SCAC4 | ||
| 3076 | RFET | REEFER TERMINALS INC | SCAC3 | ||
| 3077 | RFEZ | (REAZ) RETIRED 04-06-93 ATP (ACI 2348) | PWRC | ||
| 3078 | RFF | Russian Federation Air Force | ICAO1 | ||
| 3079 | RFFA | ROBERTSON FAST FREIGHT | SCAC4 | ||
| 3080 | RFFI | ROSS FAST FREIGHT | SCAC3 | ||
| 3081 | RFFL | RONS FAMILY FUEL | SCAC4 | ||
| 3082 | RFFN | RIFFLINE INC | SCAC3 | ||
| 3083 | RFFN | RAINFOREST FLORA INC | SCAC4 | ||
| 3084 | RFFO | ROCCO FARM FOODS INC | SCAC3 | ||
| 3085 | RFFQ | RUFFOLO, J & SONS | SCAC3 | ||
| 3086 | RFFR | RAYMOUR & FLANIGAN FURNITURE | SCAC4 | ||
| 3087 | RFFS | RIFF SHIPPING CORP PIRAEUS GREECE | SCAC3 | ||
| 3088 | RFFSA | Rede Ferrovária Federal SA | BR | TRAFFIC | |
| 3089 | RFFT | R F FREIGHT LINES INC | SCAC3 | ||
| 3090 | RFFW | RENFREIGHT FORWARDING S A | SCAC3 | ||
| 3091 | RFGA | RFG TRANSPORTATION | SCAC4 | ||
| 3092 | RFGD | REFRIGERATED TRUCKING SERVICE, INC | SCAC3 | ||
| 3093 | RFGD | REFRIGERATED TRUCKING SERVICE INC | SCAC4 | ||
| 3094 | RFGH | RAIL FREIGHT TRANS CO | SCAC3 | ||
| 3095 | RFGH | RAIL FREIGHT TRANSPORTATION INC | SCAC4 | ||
| 3096 | RFGI | ROYAL FREIGHT INC | SCAC3 | ||
| 3097 | RFGI | RAFAGAS DEL PACIFICO | SCAC4 | ||
| 3098 | RFGM | REFRIGERADOS SDL | SCAC4 | ||
| 3099 | RFGP | R F G | SCAC4 | ||
| 3100 | RFGT | R F G TRUCKING CO | SCAC3 |