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: 192.168.28.4/30
Addresses: 4 (2²)
First IP: 192.168.28.4 (4.28.168.192.in-addr.arpa)
Last IP: 192.168.28.7 (7.28.168.192.in-addr.arpa)

Owned By: Private Use
/8 Operated By: ARIN

Related Networks

192.0.0.0/8
191.0.0.0/8
193.0.0.0/8
192.168.28.0/29
192.168.28.4/32
192.168.28.7/32

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