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: 202.128.31.0/31
Addresses: 2 (2¹)
First IP: 202.128.31.0 (0.31.128.202.in-addr.arpa)
Last IP: 202.128.31.1 (1.31.128.202.in-addr.arpa)

/8 Operated By: APNIC

Related Networks

202.0.0.0/8
201.0.0.0/8
203.0.0.0/8
202.128.31.0/30
202.128.31.0/32
202.128.31.1/32

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