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: 3.7.251.240/28
Addresses: 16 (2⁴)
First IP: 3.7.251.240 (240.251.7.3.in-addr.arpa)
Last IP: 3.7.251.255 (255.251.7.3.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

3.0.0.0/8
2.0.0.0/8
4.0.0.0/8
3.7.251.224/27
3.7.251.240/32
3.7.251.255/32

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