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: 78.128.63.204/30
Addresses: 4 (2²)
First IP: 78.128.63.204 (204.63.128.78.in-addr.arpa)
Last IP: 78.128.63.207 (207.63.128.78.in-addr.arpa)

/8 Operated By: RIPE NCC

Related Networks

78.0.0.0/8
77.0.0.0/8
79.0.0.0/8
78.128.63.200/29
78.128.63.204/32
78.128.63.207/32

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