online CIDR and IP subnet calculator : Check host

81.90.180.216-81.90.180.223
81.90.180.216/29

81.90.180.224-81.90.180.255
81.90.180.224/27

81.90.181.0-81.90.181.127
81.90.181.0/25

81.90.181.128-81.90.181.159
81.90.181.128/27

81.90.181.160-81.90.181.167
81.90.181.160/29

81.90.181.168-81.90.181.171
81.90.181.168/30

81.90.181.172-81.90.181.172
81.90.181.172/32

IP subnet calculator 81.90.180.216-81.90.181.172