View Source InetCidr Cheatsheet

Parse a CIDR block

This works for IPv4 and IPv6 CIDR blocks. There is also parse_cidr!/1.

iex> InetCidr.parse_cidr("192.168.0.0/16")
{:ok, {{192,168,0,0}, {192,168,255,255}, 16}}

Parse an IP Address

This works for IPv4 and IPv6 addresses. There is also parse_address!/1.

iex> InetCidr.parse_address("192.168.15.20")
{:ok, {192,168,15,20}}

Get the string representation of a CIDR block

This works for IPv4 and IPv6 addresses.

iex> "192.168.0.0/16" |> InetCidr.parse_cidr! |> InetCidr.to_string
"192.168.0.0/16"

Get the end of a CIDR block

This works for IPv4 and IPv6 addresses. There is also calc_end_address!/2.

iex> InetCidr.calc_end_address({192, 168, 0, 0}, 16)
{:ok, {192, 168, 255, 255}}

Check if an address is in a CIDR block