Exhibit 21.1

SUBSIDIARIES OF COTERRA ENERGY INC.

Big Sandy Gas Company

BEC Texas LLC

Blue Devil LLC

Blue Steel LLC

Bruin Exploration LLC

BWNR, LLC

Cabot Pipeline Holdings LLC

Cimarex Energy Co

Cimarex Energy of Colorado

Cimarex Gas Gathering, Inc

Cimarex Resolute LLC

Cody Energy LLC

COG Finance Corporation

COG Holdings LLC

Conmag Energy Corp

Doblique Energy Corp

GasSearch Drilling Services Corporation

Hick Acquisition Company I, Inc.

Hunter Resources Inc.

Key Production Company

Magnum Hunter Production, Inc

Oklahoma Gas Processing, Inc

Prize Energy Resources Inc

Resolute Natural Resources Company, LLC

Resolute Natural Resources Southwest, LLC

Resolute Northern Rockies, LLC

Resolute Wyoming, Inc.

Susquehanna Real Estate I Corporation

WYNR, LLC