🌐Subnet Calculator

Enter an IPv4 address and CIDR prefix to find the network, broadcast, usable host range, mask and host count.

IPv4 address

Subnet prefix (CIDR /)

Network—

Broadcast—

First host—

Last host—

Subnet mask—

Wildcard—

Usable hosts—

About the Subnet Calculator

Enter an IPv4 address and a CIDR prefix (for example /24) to see the network and broadcast addresses, the usable host range, the subnet and wildcard masks, and how many usable hosts the subnet contains.