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: 190.128.4.12/31
Addresses: 2 (2¹)
First IP: 190.128.4.12 (12.4.128.190.in-addr.arpa)
Last IP: 190.128.4.13 (13.4.128.190.in-addr.arpa)

/8 Operated By: LACNIC

Related Networks

190.0.0.0/8
189.0.0.0/8
191.0.0.0/8
190.128.4.12/30
190.128.4.12/32
190.128.4.13/32

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