ONE Gas is a regulated natural gas distribution utility. Co. provides natural gas distribution services to its customers and is a natural gas distributor in Oklahoma, Kansas and Texas. Co. primarily serves residential, commercial and transportation customers in all three states. Co.'s natural gas distribution markets are Oklahoma City and Tulsa, OK; Kansas City, Wichita and Topeka, KS; and Austin and El Paso, TX. Co.'s three divisions, Oklahoma Natural Gas, Kansas Gas Service and Texas Gas Service, distribute natural gas to the natural gas distribution customers in Oklahoma, Kansas and Texas.