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: 231.128.32.0/22
Addresses: 1024 (2¹⁰)
First IP: 231.128.32.0 (0.32.128.231.in-addr.arpa)
Last IP: 231.128.35.255 (255.35.128.231.in-addr.arpa)

/8 Operated By: Multicast

Related Networks

231.0.0.0/8
230.0.0.0/8
232.0.0.0/8
231.128.32.0/21
231.128.32.0/32
231.128.35.255/32

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