Subnet / CIDR Calculator

Calculate IPv4/IPv6 network and broadcast addresses, host ranges, masks, and subnet splits from CIDR.

IP address / CIDR

Version

Prefix length

/24

Network summary

IPv4Class CPrivate (RFC 1918)

Network address

192.168.1.0/24

Broadcast address

192.168.1.255

CIDR notation

192.168.1.0/24

First usable host

192.168.1.1

Last usable host

192.168.1.254

Host range

192.168.1.1 – 192.168.1.254

Subnet mask

255.255.255.0

Wildcard mask

0.0.0.255

Usable hosts

254

Total addresses

256

Address (input)

192.168.1.10

Prefix / bits

/24 (8 host bits)

Subnet mask in binary — network bits / host bits

11111111.

00000000

Address in binary — network portion highlighted

11000000.

10101000.

00000001.

00001010

Split into new prefix

/26

4 subnets

62 usable hosts each

#	Subnet	Broadcast	Usable range	Hosts
0	192.168.1.0/26	192.168.1.63	192.168.1.1 – 192.168.1.62	62
1	192.168.1.64/26	192.168.1.127	192.168.1.65 – 192.168.1.126	62
2	192.168.1.128/26	192.168.1.191	192.168.1.129 – 192.168.1.190	62
3	192.168.1.192/26	192.168.1.255	192.168.1.193 – 192.168.1.254	62