online CIDR and IP subnet calculator : Check host

54.165.192.0-54.165.255.255
54.165.192.0/18

54.166.0.0-54.166.127.255
54.166.0.0/17

54.166.128.0-54.166.159.255
54.166.128.0/19

54.166.160.0-54.166.175.255
54.166.160.0/20

54.166.176.0-54.166.183.255
54.166.176.0/21

54.166.184.0-54.166.187.255
54.166.184.0/22

54.166.188.0-54.166.189.255
54.166.188.0/23

IP subnet calculator 54.165.192.0-54.166.189.255