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: 8.3.248.0/25
Addresses: 128 (2⁷)
First IP: 8.3.248.0 (0.248.3.8.in-addr.arpa)
Last IP: 8.3.248.127 (127.248.3.8.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

8.0.0.0/8
7.0.0.0/8
9.0.0.0/8
8.3.248.0/24
8.3.248.0/32
8.3.248.127/32

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