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: 154.0.3.78/31
Addresses: 2 (2¹)
First IP: 154.0.3.78 (78.3.0.154.in-addr.arpa)
Last IP: 154.0.3.79 (79.3.0.154.in-addr.arpa)

/8 Operated By: AFRINIC

Related Networks

154.0.0.0/8
153.0.0.0/8
155.0.0.0/8
154.0.3.76/30
154.0.3.78/32
154.0.3.79/32

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