| AEP |
American Electric Power |
| ANR |
TC Energy (Trans Canada) |
| ANTERO |
Antero Midstream |
| BP |
British Petroleum |
| BUC |
Buckeye Partners |
| BRM |
Blue Racer Midstream |
| CEI |
Cleveland Electric and Illuminating Company |
| COH |
Columbia Gas of Ohio |
| CMP |
Crestwood Midstream Partners |
| CPC |
Crossroads Pipeline Company |
| CPP |
Cleveland Public Power |
| DEOG-T |
Dominion East Ohio Gas – Transmission |
| DEOG-D |
Dominion East Ohio Gas – Distribution |
| DTI |
Dominion Transmission Interstate |
| DOME |
Dome Pipeline (Pembina?) |
| DUKE |
Duke Energy |
| EHP |
Eureka Hunter Pipeline |
| ENV |
EnerVest |
| EPP |
Enterprise Products Partners |
| EPS |
Enbridge Pipeline System |
| EQT |
EQT Midstream |
| ETP |
Energy Transfer Partners |
| GEN |
Generation Pipeline LLC |
| KMP |
Kinder Morgan Pipeline (Pembina?) |
| KNG |
KNG Energy (Kalida Natural Gas) |
| MID |
Mid-Valley |
| MMP |
Momentum Midstream Pipeline |
| MPL |
Marathon Pipeline Company |
| MWE |
Mark West Energy |
| NCGT |
North Coast Gas Transmission |
| NEXUS |
Nexus Pipeline (Enbridge) |
| NGO |
National Gas & Oil (The Energy Cooperative) |
| NORCO |
Some portions were formally known as ARCO and/or TransMontaigne |
| OGC |
Ohio Gas Company |
| OOG |
Ohio Oil Gathering |
| RENG |
Rice Energy |
| REX |
Rockies Express Pipeline (Kinder Morgan) |
| ROVER |
Rover Pipeline (Energy Transfer) |
| SPECTRA |
Spectra Energy (Texas Eastern?) |
| SMP |
Summit Midstream Partners |
| SUN |
Sunoco Logistics (Energy Transfer) |
| TCO |
Columbia Gas Transmission |
| TEP |
Tallgrass Energy Partners |
| TETLP |
Texas Eastern Product Pipeline Company - Enterprise |
| TGP |
Tennessee Eastern Transmission LP |
| UTI |
Utility Technologies International Corp |
| UTOPIA |
Utopia Pipeline (Kinder Morgan) |
| VEDO |
CenterPoint Energy (Vectren Energy Delivery of Ohio) |
| WIPL |
Williams Pipeline |
