| 6801 | ROCB | ROSALES OIL COMPANY | | | SCAC4 |
| 6802 | ROCD | ROCHESTER CITY DELIVERY INC | | | SCAC3 |
| 6803 | ROCD | ROCHESTER CITY DELIVERY INC | | | SCAC4 |
| 6804 | ROCF | ROBBINS FARMS | | | SCAC4 |
| 6805 | ROCH | ROWAYTON FUEL & OIL CO INC | | | SCAC4 |
| 6806 | ROCI | RANCHERS OIL CO | | | SCAC3 |
| 6807 | ROCJ | ROCHE MOVING & STORAGE INC | | | SCAC3 |
| 6808 | ROCK | Chicago, Rock Island and Pacific Ry. Co. | added 7/1975; 1/1980; eliminated 7/1980 | | NAKINA |
| 6809 | ROCK | Chicago, Rock Island and Pacific Ry. Co. | added 7/75; 1/80; eliminated 7/80 | | NRHS |
| 6810 | ROCK | CHICAGO, ROCK ISLAND & PACIFIC RAILROAD (ROCK ISLAND) | | | PWRC |
| 6811 | ROCK | Chicago, Rock Island and Pacific Railroad | | | RSRV |
| 6812 | ROCK | Chicago, Rock Island and Pacific Ry. Co | 1975 - 1980 | USA | TRAFFIC |
| 6813 | ROCKLAND | Rockland Coaches | A Coach USA company | USA | TRAFFIC |
| 6814 | ROCL | ROSS, C L INC | | | SCAC3 |
| 6815 | ROCL | RAPID OCEAN CO LTD | | | SCAC4 |
| 6816 | ROCM | RICH OIL COMPANY INC | | | SCAC4 |
| 6817 | ROCM | Republic of China Marine Corps | | RC | TRAFFIC |
| 6818 | ROCN | ROCOR TRANSPORTATION COMPANIES | | | SCAC3 |
| 6819 | ROCN | RORO COMPANY LTD | | | SCAC4 |
| 6820 | ROCO | ROC MOVING & STORAGE | | | SCAC3 |
| 6821 | ROCO | ROC MOVING & STORAGE | | | SCAC4 |
| 6822 | ROCO | | | X | TRAFFIC |
| 6823 | ROCQ | ROCKFORD-AURORA MOTOR SERVICE INC | | | SCAC3 |
| 6824 | ROCQ | ROAD KING & LOGISTIC INC | | | SCAC4 |
| 6825 | ROCS | RIO GRANDE CARRIERS INC | | | SCAC4 |
| 6826 | ROCU | ROLAND UMSCHLAGSGESELLSCHAFT | | D | BIC |
| 6827 | ROCU | AMERICAN ORIENTAL ENTERPRISES CO LT | | | SCAC4 |
| 6828 | ROCV | ROCCO VAN & STORAGE CO | | | SCAC3 |
| 6829 | ROCW | ROSE CITY MOVING & STORAGE INC | | | SCAC3 |
| 6830 | ROCW | ROADLINK EXPRESS INC | | | SCAC4 |
| 6831 | ROCX | Rocky Mountain Transportation Services | added 7/1995; 7/2000-7/2005 | | NAKINA |
| 6832 | ROCX | Rock Island Improvement Co. | added 1/1979; 1/1980; eliminated 7/1980 | | NAKINA |
| 6833 | ROCX | Rock Island Improvement Co. | added 1/79; 1/80; eliminated 7/80 | | NRHS |
| 6834 | ROCX | Rocky Mountain Transportation Services | added 7/95; 7/2000 | | NRHS |
| 6835 | ROCX | *ROCK ISLAND IMPROVEMENT COMPANY (ROCK ISLAND) | | | PWRC |
| 6836 | ROCX | +ROCKY MOUNTAIN TRANSPORTATION SERVICES | | | PWRC |
| 6837 | ROCX | Rock Island Improvement (Rocky Mountain Transportation Services) | | | RSRV |
| 6838 | ROCX | ROCKY MOUNTAIN TRANSPORTATIN SERVIC | | | SCAC4 |
| 6839 | ROCY | ROBERTS CARRIER CORPORATION | | | SCAC3 |
| 6840 | ROD | Aerodan, S.A. de C.V. | Callsign: Aerodan, | MEX | AVCODES |
| 6841 | ROD | Copper State Airlines | Callsign: Roadrunner, | USA | AVCODES |
| 6842 | ROD | Aerodan | | | ICAO1 |
| 6843 | ROD | | City: Rodewisch | D | TRAFFIC |
| 6844 | RODC | RODCO LEASING AND FLEET SERVICE REP | | | SCAC3 |
| 6845 | RODC | RODRIGUEZ CASTRO, ALFREDO | | | SCAC4 |
| 6846 | RODD | ROEDIGER, DANIEL B | | | SCAC3 |
| 6847 | RODD | RODRIGUE, GUY | | | SCAC4 |
| 6848 | RODE | ROTADYNE INC | | | SCAC4 |
| 6849 | RODE | Rode Gleis und Tiefbau GmbH | | DE | VKM |
| 6850 | RODF | ROADRUNNER FREIGHT LINES INC | | | SCAC3 |
| 6851 | RODG | RODGERS ENTERPRISES | | | SCAC3 |
| 6852 | RODG | RODRIGUEZ GARCIA, LUCILA ALEJANDRIN | | | SCAC4 |
| 6853 | RODJ | ROBERTS, JERRY D | | | SCAC3 |
| 6854 | RODJ | RODRIGUEZ ISLAS, JOSE ANGEL | | | SCAC4 |
| 6855 | RODK | R O D TRUCKING | | | SCAC3 |
| 6856 | RODM | RODMAN TRUCK SERVICE | | | SCAC3 |
| 6857 | RODN | RODEN, CARL HERBERT | | | SCAC3 |
| 6858 | RODO | ROBERTSON & SON TRUCKING | | | SCAC3 |
| 6859 | RODP | RODNOC EXPRESS INC | | | SCAC3 |
| 6860 | RODP | RODRIGUEZ PRODUCE | | | SCAC4 |
| 6861 | RODQ | ROCKET DELIVERY SERVICE | | | SCAC3 |
| 6862 | RODQ | ROCKY MOUNTAIN TRAILWAYS SALT LAKE | | | SCAC4 |
| 6863 | RODR | RODRIGUEZ TRUCKING | | | SCAC4 |
| 6864 | RODS | ROADRUNNER DELIVERY SERVICE INC | | | SCAC3 |
| 6865 | RODT | ROADRUNNER TRUCKING INC | | | SCAC3 |
| 6866 | RODU | MAURITIUS SHIPPING CORPORATION LTD | | MUS | BIC |
| 6867 | RODW | ROADWAY COURIER | | | SCAC3 |
| 6868 | ROE | Aeroeste Srl | Callsign: Este-Bolivia, | BOL | AVCODES |
| 6869 | ROE | Aeroeste | | | ICAO1 |
| 6870 | ROEB | ROSEBURG MOVING & STORAGE | | | SCAC3 |
| 6871 | ROEB | ROCKWAY PRECISION MACHINE LTD | | | SCAC4 |
| 6872 | ROEC | ROEHLK TRUCKING, INC | | | SCAC3 |
| 6873 | ROED | ROEDERER TRANSFER & STORAGE CO | | | SCAC3 |
| 6874 | ROED | ROEHL TRANSPORT INC (DEDICATED DIVI | | | SCAC4 |
| 6875 | ROEE | ROBERTS EXPRESS INC | | | SCAC3 |
| 6876 | ROEE | ROMANIA EUROEST SA | | RO | VKM |
| 6877 | ROEEE | Raab-Ödenburg-Ebenfurter Eisenbahn | | AT | VKM |
| 6878 | ROEG | RODGERS, ED MOVING & STORAGE | | | SCAC3 |
| 6879 | ROEI | ROARING EXPRESS INC | | | SCAC4 |
| 6880 | ROEJ | ROE LOGISTICS LLC | | | SCAC4 |
| 6881 | ROEK | ROEHL TRANSPORT INC (REFRIGERATED D | | | SCAC4 |
| 6882 | ROEM | ROEHL TRANSPORT INC (DEDICATED TEAM | | | SCAC4 |
| 6883 | ROEN | ROENICK, W L INC | | | SCAC3 |
| 6884 | ROEP | ROBERTSONS EXPRESS INC | | | SCAC3 |
| 6885 | ROEP | ROSALES ENTERPRISE | | | SCAC4 |
| 6886 | ROEQ | ROSE BROS TRUCKING CO | | | SCAC3 |
| 6887 | ROER | ROEDER CARTAGE COMPANY INCORPORATED | | | SCAC3 |
| 6888 | ROER | ROEDER CARTAGE COMPANY INCORPORATED | | | SCAC4 |
| 6889 | ROES | ROWE & SON TRANSFER | | | SCAC3 |
| 6890 | ROEU | CONTAINERHANDEL CARSTEN ROEHE GMBH | | D | BIC |
| 6891 | ROEU | CONTAINERHANDE | | | SCAC4 |
| 6892 | ROEV | ROEHL, EVERETT G INC | | | SCAC3 |
| 6893 | ROEV | ROEHL TRANSPORT INC | | | SCAC4 |
| 6894 | ROEW | ROOT, EDGAR W, INC | | | SCAC3 |
| 6895 | ROEY | ROCAR EQUIPMENT COMPANY | | | SCAC3 |
| 6896 | ROEY | REESE DEVELOPMENT INC | | | SCAC4 |
| 6897 | ROEZ | ROEHL TRANSPORT INCORPORATED | | | PWRC |
| 6898 | ROEZ | Roehl Transport | | | RSRV |
| 6899 | ROEZ | ROEHL TRANSPORT, INC. | | | SCAC4 |
| 6900 | ROF | Romanian Air Force | Callsign: Romaf, | RO | AVCODES |
