Visual Subnet Calculator

Enter the network you wish to subnet:

Network Address Mask bits
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Click below to split and join subnets.
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Subnet address Netmask Range of addresses Useable IPs Hosts Divide Join
10.0.0.0/9255.128.0.010.0.0.0 - 10.127.255.25510.0.0.1 - 10.127.255.2548388606Divide
10.128.0.0/11255.224.0.010.128.0.0 - 10.159.255.25510.128.0.1 - 10.159.255.2542097150Divide
10.160.0.0/11255.224.0.010.160.0.0 - 10.191.255.25510.160.0.1 - 10.191.255.2542097150Divide
10.192.0.0/11255.224.0.010.192.0.0 - 10.223.255.25510.192.0.1 - 10.223.255.2542097150Divide
10.224.0.0/13255.248.0.010.224.0.0 - 10.231.255.25510.224.0.1 - 10.231.255.254524286Divide
10.232.0.0/13255.248.0.010.232.0.0 - 10.239.255.25510.232.0.1 - 10.239.255.254524286Divide
10.240.0.0/13255.248.0.010.240.0.0 - 10.247.255.25510.240.0.1 - 10.247.255.254524286Divide
10.248.0.0/13255.248.0.010.248.0.0 - 10.255.255.25510.248.0.1 - 10.255.255.254524286Divide