online CIDR and IP subnet calculator : Check host

221.139.0.0-221.139.31.255
221.139.0.0/19

221.139.32.0-221.139.47.255
221.139.32.0/20

221.139.48.0-221.139.55.255
221.139.48.0/21

221.139.56.0-221.139.59.255
221.139.56.0/22

221.139.60.0-221.139.61.255
221.139.60.0/23

221.139.62.0-221.139.62.255
221.139.62.0/24

221.138.0.0-221.138.255.255
221.138.0.0/16

IP subnet calculator 221.138.0.0-221.139.62.255