IP Range Calculator

Find the usable IP address range for any CIDR block — the network address, broadcast address, and everything in between.

How it is calculated

Enter an IP address and prefix length to see the network address, broadcast address, and everything usable in between.

Formula

Range: Network address + 1 to Broadcast address − 1

Frequently asked questions

How is this different from the Subnet Calculator?

It's the same underlying calculation, focused specifically on the usable IP range rather than the full binary breakdown the Subnet Calculator provides.