IP Subnet Calculator IP Subnet Calculator IP Address: Subnet Mask: 255.255.255.255 (/32) 255.255.255.254 (/31) 255.255.255.252 (/30) 255.255.255.248 (/29) 255.255.255.240 (/28) 255.255.255.224 (/27) 255.255.255.192 (/26) 255.255.255.128 (/25) 255.255.255.0 (/24) 255.255.254.0 (/23) 255.255.252.0 (/22) 255.255.248.0 (/21) 255.255.240.0 (/20) 255.255.224.0 (/19) 255.255.192.0 (/18) 255.255.128.0 (/17) 255.255.0.0 (/16) Calculate