online CIDR and IP subnet calculator : Check host

54.215.136.0-54.215.143.255
54.215.136.0/21

54.215.144.0-54.215.159.255
54.215.144.0/20

54.215.160.0-54.215.191.255
54.215.160.0/19

54.215.192.0-54.215.207.255
54.215.192.0/20

54.215.208.0-54.215.215.255
54.215.208.0/21

54.215.216.0-54.215.217.255
54.215.216.0/23

54.215.218.0-54.215.218.255
54.215.218.0/24

IP subnet calculator 54.215.136.0-54.215.218.255