Subnet calculator

Network address	192.168.1.0
Broadcast	192.168.1.255
Netmask	255.255.255.0 (/24)
Wildcard	0.0.0.255
First host	192.168.1.1
Last host	192.168.1.254
Number of hosts	254
Class	C
Type	Private (RFC 1918)

Network address

192.168.1.0

Broadcast

192.168.1.255

Netmask

255.255.255.0 (/24)

Wildcard

0.0.0.255

First host

192.168.1.1

Last host

192.168.1.254

Number of hosts

254

Class

Type

Private (RFC 1918)

About this tool

Enter an IPv4 address with CIDR notation (for example 192.168.1.10/24) or with a netmask. The calculator instantly shows the network address, broadcast, first and last usable address and the number of hosts.

🔒 Your input stays in your browser and is never sent anywhere.

Frequently asked questions

How many hosts fit in a /24?

A /24 has 256 addresses, of which 254 are usable for hosts. The network and broadcast addresses are reserved.

What is a wildcard mask?

The inverse of the netmask. It is used in Cisco ACLs, among other places.

What to do next

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