IP subnet calculator

173.194.0.0-173.194.89.255

173.194.0.0-173.194.63.255
173.194.0.0/18

173.194.64.0-173.194.79.255
173.194.64.0/20

173.194.80.0-173.194.87.255
173.194.80.0/21

173.194.88.0-173.194.89.255
173.194.88.0/23