online CIDR and IP subnet calculator : Check host

81.169.161.0-81.169.161.255
81.169.161.0/24

81.169.162.0-81.169.163.255
81.169.162.0/23

81.169.164.0-81.169.167.255
81.169.164.0/22

81.169.168.0-81.169.175.255
81.169.168.0/21

81.169.176.0-81.169.183.255
81.169.176.0/21

81.169.184.0-81.169.187.255
81.169.184.0/22

81.169.188.0-81.169.188.255
81.169.188.0/24

IP subnet calculator 81.169.161.0-81.169.188.255