CIDR Calculator

Calculates CIDR and IPv4 ranges.

>
Block 1 10.1.3.0/24 10.1.3.0 to 10.1.3.255 
[
  {
    "start":"10.1.3.0",
    "end":"10.1.3.255",
    "netmask":"255.255.255.0",
    "maskbits":24
  }
]