Network tools

IP subnettingcalculator

Compute network and broadcast addresses, host ranges, CIDR, masks, and IPv6 prefixes - client-side for quick planning and troubleshooting.

Configuration

IP version

IPv4 address

Mask input

CIDR notation

Network bits (0–32)

Quick CIDR

Network information

Derived from your inputs (updates as you type)

Not routable on the public internet; use with NAT as needed.

10.0.0.0/8: 10.0.0.0 – 10.255.255.255; Class A private (~16.7M addresses)
172.16.0.0/12: 172.16.0.0 – 172.31.255.255; Class B private (~1M addresses)
192.168.0.0/16: 192.168.0.0 – 192.168.255.255; Class C private (~65k addresses)

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