Triad Hunter S-3/A Shelf registration (amended)

Exhibit 21.1

Subsidiaries of the Registrant

Name of Entity

State of Organization

PRC Williston, LLC Eagle Ford Hunter, Inc. Magnum Hunter Resources GP, LLC Magnum Hunter Resources LP Triad Hunter, LLC Alpha Hunter Drilling, LLC Eureka Hunter Pipeline, LLC Eureka Hunter Land, LLC Hunter Disposal, LLC Hunter Real Estate, LLC NGAS Hunter, LLC Williston Hunter ND, LLC MHR Acquisition Company III, LLC MHR Callco Corporation MHR Exchangeco Corporation Magnum Hunter Production, Inc. Energy Hunter Securities, Inc. Sentra Corporation NGAS Gathering LLC 54NG, LLC Licking River Gathering Company, LLC Williston Hunter Canada, Inc. Williston Hunter, Inc. Magnum Hunter Midstream, LLC Triad Hunter Gathering, LLC Magnum Hunter Marketing, LLC

Delaware Colorado Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware Alberta, Canada Alberta, Canada Kentucky Kentucky Kentucky Kentucky Kentucky Kentucky Alberta, Canada Delaware Delaware Delaware Delaware