Are you asking about pumpers that check wells daily? If so, Fasken and Pioneer aren't going to want their company pumpers doing contract work on the side.
Contract pumpers are not hard to find. You can look for them in the field, or you can look for them by phone. Find an operator that doesn't have many wells in the area where you need a contract pumper and call them and ask who pumps their wells in that area. It's likely a contract pumper. If it's not that pumper may know a contract pumper in the area.
call some of the oilfield supply companies in Hobbs and see if somebody has left a stack of business cards on the counter or if there is somebody they like that they do business with