HomeCisco Networking Basics Subnet Calculator Cyber Cloud Learn -16 May 0 IP Subnet Calculator IPv4 Subnet Calculator IP Address: Subnet Mask: /1 - 128.0.0.0 /2 - 192.0.0.0 /3 - 224.0.0.0 /4 - 240.0.0.0 /5 - 248.0.0.0 /6 - 252.0.0.0 /7 - 254.0.0.0 /8 - 255.0.0.0 /9 - 255.128.0.0 /10 - 255.192.0.0 /11 - 255.224.0.0 /12 - 255.240.0.0 /13 - 255.248.0.0 /14 - 255.252.0.0 /15 - 255.254.0.0 /16 - 255.255.0.0 /17 - 255.255.128.0 /18 - 255.255.192.0 /19 - 255.255.224.0 /20 - 255.255.240.0 /21 - 255.255.248.0 /22 - 255.255.252.0 /23 - 255.255.254.0 /24 - 255.255.255.0 /25 - 255.255.255.128 /26 - 255.255.255.192 /27 - 255.255.255.224 /28 - 255.255.255.240 /29 - 255.255.255.248 /30 - 255.255.255.252 /31 - 255.255.255.254 /32 - 255.255.255.255 Calculate IPv6 Subnet Calculator IP Address: Prefix Length: /64 /56 /48 /32 /24 /16 /8 Calculate Tags: Cisco Networking Basics Facebook Twitter