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: 9.0.4.66/31
Addresses: 2 (2¹)
First IP: 9.0.4.66 (66.4.0.9.in-addr.arpa)
Last IP: 9.0.4.67 (67.4.0.9.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

You can also use some of the other examples such as: