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: 97.128.15.128/31
Addresses: 2 (2¹)
First IP: 97.128.15.128 (128.15.128.97.in-addr.arpa)
Last IP: 97.128.15.129 (129.15.128.97.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

97.0.0.0/8
96.0.0.0/8
98.0.0.0/8
97.128.15.128/30
97.128.15.128/32
97.128.15.129/32

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