IPv4 Subnet Calculator

This calculator and tool allows you to type an IP address in and get information on a particular subnet. Enter an IP or range in CIDR notation.

Network: 208.0.0.0/4
Addresses: 268435456 (2²⁸)
First IP: 208.0.0.0 (0.0.0.208.in-addr.arpa)
Last IP: 223.255.255.255 (255.255.255.223.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

208.0.0.0/8
207.0.0.0/8
209.0.0.0/8
192.0.0.0/3
208.0.0.0/32
223.255.255.255/32

You can also use some of the other examples such as:

0.0.0.0/0
1.0.0.0/8
127.0.0.1
30.0.0.0/8
192.168.0.0/16