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: 155.128.63.254/31
Addresses: 2 (2¹)
First IP: 155.128.63.254 (254.63.128.155.in-addr.arpa)
Last IP: 155.128.63.255 (255.63.128.155.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

155.0.0.0/8
154.0.0.0/8
156.0.0.0/8
155.128.63.252/30
155.128.63.254/32
155.128.63.255/32

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