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: 65.255.243.240/28
Addresses: 16 (2⁴)
First IP: 65.255.243.240 (240.243.255.65.in-addr.arpa)
Last IP: 65.255.243.255 (255.243.255.65.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

65.0.0.0/8
64.0.0.0/8
66.0.0.0/8
65.255.243.224/27
65.255.243.240/32
65.255.243.255/32

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