IPv4 Subnet Calculator

Calculate IPv4 subnet details including network address, broadcast, usable hosts

IP Address

CIDR Prefix

Subnet Mask

Network Address

Broadcast Address

First Usable Host

Last Usable Host

Total Hosts

How to use

Enter an IPv4 address and a CIDR prefix (e.g., 24) to calculate subnet details. The results update in real time showing network address, broadcast address, first and last usable hosts, and total number of hosts.

Related Tools

IPv6 ULA Generator

Generate random IPv6 Unique Local Addresses (fd00::/8)

Look up the vendor of a MAC address from the built-in OUI database

mac

lookup

vendor