| 2001 | RDBC | READING BUS LINE INC | | | SCAC3 |
| 2002 | RDBC | READING BUS LINE INC | | | SCAC4 |
| 2003 | RDBD | REUNION DAY PRODUCTIONS | | | SCAC4 |
| 2004 | RDBE | REPO DEPOT FIVE (5) STAR | | | SCAC4 |
| 2005 | RDBF | RED BALL FORWARDERS INC | | | SCAC3 |
| 2006 | RDBG | R & D TRANSPORT INC | | | SCAC4 |
| 2007 | RDBH | RADABAUGH TRUCK SERVICE INC | | | SCAC3 |
| 2008 | RDBH | RDB FREIGHT | | | SCAC4 |
| 2009 | RDBI | RIDDELL BROTHERS INC | | | SCAC3 |
| 2010 | RDBK | RED BANK TRANSPORT INC | | | SCAC3 |
| 2011 | RDBK | RIDEAU BULK TERMINALS | | | SCAC4 |
| 2012 | RDBL | RBL ENTERPRISES | | | SCAC3 |
| 2013 | RDBM | RED BIRD OF MISSOURI | | | SCAC3 |
| 2014 | RDBN | RUBBER DOGGIE BONE | | | SCAC3 |
| 2015 | RDBN | RED BARON TRANSPORTATION INC | | | SCAC4 |
| 2016 | RDBO | RETAIL DISTRIBUTION & LOGISTICS LLC | | | SCAC4 |
| 2017 | RDBP | RED BIRD TRANSPORTATION INC | | | SCAC4 |
| 2018 | RDBQ | RED BALL TRANSFER & STORAGE CO INC | | | SCAC3 |
| 2019 | RDBQ | RODRIGUEZ HERRERA, GUILLERMO | | | SCAC4 |
| 2020 | RDBR | RODGERS BROS SERVICES INC | | | SCAC3 |
| 2021 | RDBS | RONDALE BUS SERVICE INC | | | SCAC3 |
| 2022 | RDBS | RED BARON TRUCKING INC | | | SCAC4 |
| 2023 | RDBT | RED BARON TRUCKING | | | SCAC3 |
| 2024 | RDBU | BALESTRA | | | SCAC3 |
| 2025 | RDBV | REIDS BUS SERVICE | | | SCAC3 |
| 2026 | RDBW | ROBINSON, D TRUCKING LLC | | | SCAC4 |
| 2027 | RDBY | ROSMAR DELIVERY SERVICE | | | SCAC4 |
| 2028 | RDC | Aerolineas Del Centro, S.A. de C.V. | | MEX | AVCODES |
| 2029 | RDC | RDC Autozug Sylt | | D | TRAFFIC |
| 2030 | RDC | RDC Deutschland GmbH | | DE | VKM |
| 2031 | RDCA | ROADRUNNER COURIER INC | | | SCAC4 |
| 2032 | RDCB | RED CAB CO | | | SCAC3 |
| 2033 | RDCB | RED DRAGON TRANSPORT INC | | | SCAC4 |
| 2034 | RDCC | REDI-CRETE CORPORATION | | | SCAC3 |
| 2035 | RDCD | RADCLIFF DELIVERY INC | | | SCAC3 |
| 2036 | RDCE | PRODUCE TRANSPORT SERVICE, INC | | | SCAC3 |
| 2037 | RDCF | RODRIGUEZ CRUZ, FIDEL | | | SCAC4 |
| 2038 | RDCG | ROSS, DOUG CARTAGE LTD | | | SCAC3 |
| 2039 | RDCG | R & D TRUCKING | | | SCAC4 |
| 2040 | RDCH | RANDICH ENTERPRISES INC | | | SCAC3 |
| 2041 | RDCH | RED CARPET CHARTERS | | | SCAC4 |
| 2042 | RDCI | REDWOOD COAST TRUCKING | | | SCAC3 |
| 2043 | RDCJ | RAY DISTRIBUTING CO OF JACKSONVILLE | | | SCAC3 |
| 2044 | RDCL | RED CARPET LIMO | | | SCAC3 |
| 2045 | RDCM | REGIONAL DISTRIBUTION CENTER MEMPHI | | | SCAC3 |
| 2046 | RDCM | REDCOM LABORATORIES INC | | | SCAC4 |
| 2047 | RDCN | REDCO TRANSPORT | | | SCAC3 |
| 2048 | RDCN | ROD ACTION | | | SCAC4 |
| 2049 | RDCO | ROAD, C CORP | | | SCAC3 |
| 2050 | RDCP | RED CAP TRANSPORT | | | SCAC4 |
| 2051 | RDCQ | R D C LOGISTICS LLC | | | SCAC4 |
| 2052 | RDCR | RODS CHARTERS & TOURS | | | SCAC3 |
| 2053 | RDCR | RED CARGO | | | SCAC4 |
| 2054 | RDCS | RED CARPET TRAVEL SERVICE INC | | | SCAC3 |
| 2055 | RDCU | LIGNES MARITIMES CONGOLAISES (L.M.C) | | RCB | BIC |
| 2056 | RDCW | REED-CHATWOOD INC | | | SCAC3 |
| 2057 | RDCW | RUNNING DEER CONSTRUCTION | | | SCAC4 |
| 2058 | RDCX | Regional Disposal Co. | 7/2000-7/2005 (not listed) | | NAKINA |
| 2059 | RDCX | Regional Disposal Co. | Jul-00 | | NRHS |
| 2060 | RDCX | REGIONAL DISPOSAL COMPANY | | | PWRC |
| 2061 | RDCX | Regional Disposal | | | RSRV |
| 2062 | RDCY | RED ROCK TRANSFER COMPANY INC | | | SCAC4 |
| 2063 | RDD | Adygeya Airlines | Callsign: Adlines, | RUS | AVCODES |
| 2064 | RDD | Adygeya Airlines | | | ICAO1 |
| 2065 | RDDA | REED, DAVE TRUCKING INC | | | SCAC3 |
| 2066 | RDDA | RADISSON DESIGN INC | | | SCAC4 |
| 2067 | RDDB | REED DISTRIBUTING | | | SCAC3 |
| 2068 | RDDB | REED DISTRIBUTING INC | | | SCAC4 |
| 2069 | RDDE | RODDIE TRUCKING INC | | | SCAC3 |
| 2070 | RDDF | RIDDLE FUEL OIL CO INC | | | SCAC3 |
| 2071 | RDDG | RED DOG TRUCKING | | | SCAC3 |
| 2072 | RDDG | RDD FREIGHT INTERNATIONAL INC | | | SCAC4 |
| 2073 | RDDH | REDDOCH INC | | | SCAC3 |
| 2074 | RDDI | REGIONAL DISTRIBUTION, INC | | | SCAC3 |
| 2075 | RDDI | RICH, D D | | | SCAC4 |
| 2076 | RDDL | REDDING LOGISTICS TRANSPORTATION IN | | | SCAC4 |
| 2077 | RDDN | REDDEN, B W | | | SCAC3 |
| 2078 | RDDN | REDDEN MARINE SUPPLY INC | | | SCAC4 |
| 2079 | RDDO | REDDING OIL COMPANY | | | SCAC4 |
| 2080 | RDDQ | REED, DENNIS | | | SCAC3 |
| 2081 | RDDR | RICHARDS DELIVERY SERVICE | | | SCAC3 |
| 2082 | RDDS | REDDING DUMP TRUCK SERVICE INC | | | SCAC3 |
| 2083 | RDDT | RIDDLE TRUCKING INC | | | SCAC3 |
| 2084 | RDDV | REDCO DELIVERY SERVICE INC | | | SCAC3 |
| 2085 | RDDW | RAY, DON DRIVE-AWAY COMPANY INC | | | SCAC4 |
| 2086 | RDDY | RUDYS DELIVERY SERVICE | | | SCAC3 |
| 2087 | RDE | Woodbury Park, Flight Operations | Callsign: Flight Red, | GB | AVCODES |
| 2088 | RDE | II Lione Alato Arl | Callsign: Flight Red, | GB | AVCODES |
| 2089 | RDE | II Lione Alato Arl | | | ICAO1 |
| 2090 | RDEC | RADCLIFF/ECONOMY MARINE SERVICES IN | | | SCAC3 |
| 2091 | RDED | RED EXPRESS DELIVERY SERVICE | | | SCAC3 |
| 2092 | RDED | RED EXPRESS DELIVERY SERVICE | | | SCAC4 |
| 2093 | RDEE | RDF EXPRESS INC | | | SCAC4 |
| 2094 | RDEG | ROADE TRUCKING INC | | | SCAC4 |
| 2095 | RDEH | REDIEHS FREIGHTLINES INC | | | SCAC4 |
| 2096 | RDEI | RHODES DELIVERY SERVICE, INC. | | | SCAC3 |
| 2097 | RDEI | RTI DEDICATED LLC | | | SCAC4 |
| 2098 | RDEJ | R D ENTERPRISE TRANSPORTATION | | | SCAC3 |
| 2099 | RDEJ | RIOUX, DAVE EXPRESS INC | | | SCAC4 |
| 2100 | RDEK | RIDDLE TRUCKING | | | SCAC3 |
