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: 209.255.255.56/30
Addresses: 4 (2²)
First IP: 209.255.255.56 (56.255.255.209.in-addr.arpa)
Last IP: 209.255.255.59 (59.255.255.209.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

209.0.0.0/8
208.0.0.0/8
210.0.0.0/8
209.255.255.56/29
209.255.255.56/32
209.255.255.59/32

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