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: 187.0.4.206/31
Addresses: 2 (2¹)
First IP: 187.0.4.206 (206.4.0.187.in-addr.arpa)
Last IP: 187.0.4.207 (207.4.0.187.in-addr.arpa)

/8 Operated By: LACNIC

Related Networks

187.0.0.0/8
186.0.0.0/8
188.0.0.0/8
187.0.4.204/30
187.0.4.206/32
187.0.4.207/32

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