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: 201.131.254.30/31
Addresses: 2 (2¹)
First IP: 201.131.254.30 (30.254.131.201.in-addr.arpa)
Last IP: 201.131.254.31 (31.254.131.201.in-addr.arpa)

/8 Operated By: LACNIC

Related Networks

201.0.0.0/8
200.0.0.0/8
202.0.0.0/8
201.131.254.28/30
201.131.254.30/32
201.131.254.31/32

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