Subnet / CIDR Calculator

Enter an IPv4 CIDR (e.g. 192.168.1.0/24) and see network address, broadcast, host range, mask, wildcard, and total hosts.

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CIDR

Network

192.168.1.0

Broadcast

192.168.1.255

First host

192.168.1.1

Last host

192.168.1.254

Subnet mask

255.255.255.0

Wildcard

0.0.0.255

Prefix

/24

Hosts (total / usable)

256 / 254

Network in binary

11000000.10101000.00000001.00000000

How to use

1
Type a CIDR
Like 10.0.0.0/8 or 192.168.1.0/24.
2
Read the breakdown
Network, broadcast, host range, mask, wildcard, total/usable hosts.