open limping from any position is usually bad.
do you mean pocket pairs (22-AA)?
cash or tournament? how many players? stack sizes?
opening 66+ from UTG in tournaments seems to be a good place to start based on several range charts I've seen; I've personally been a little looser than that, but I try and at least make sure I have the chips to maneuver and the implied
odds to get paid off when I hit a set with my 22.