| Business | Phone |
| Absolute Energy Corp 5672 Bastille Pl, Columbus 43213 | (614) 861-5080 |
| American Energy Svc 1105 Schrock Rd # 602, Columbus 43229 | (614) 885-1901 |
| Broad Street Financial Co 37 W Broad St # 1100, Columbus 43215 | (614) 228-0326 |
| California Hydrocarbons Corp 2280 W Henderson Rd, Columbus 43220 | (614) 459-3333 |
| Cgas Exploration 4770 Indianola Ave, Columbus 43214 | (614) 888-9588 |
| Redco 1333 Firwood Dr, Columbus 43229 | (614) 888-5080 |
| Eastern Reserve Development 1823 Cambridge Blvd, Columbus 43212 | (614) 488-2070 |
| Northwood Energy Corp 941 Chatham Ln # 100, Columbus 43221 | (614) 457-1024 |
| Mackenco Inc 7917 Station St, Columbus 43235 | (614) 436-1229 |
| Khorrami Petroleum Inc 2425 Deewood Dr, Columbus 43229 | (614) 899-6440 |