Plan address space

IPv4 subnet calculator

Translate an address and CIDR prefix into the boundaries, masks, usable hosts, and smaller networks you need to plan or troubleshoot.

IPv4 input

Address and prefix

Enter any address inside the subnet. Results update immediately.

Calculated subnet

192.168.10.0/24

Private-use address
24 network
8 host
Network address
192.168.10.0
Broadcast address
192.168.10.255
Subnet mask
255.255.255.0
Wildcard mask
0.0.0.255
First usable
192.168.10.1
Last usable
192.168.10.254
Total addresses
256
Usable addresses
254
Show the binary boundary
Address
11000000.10101000.00001010.00101010
Mask
11111111.11111111.11111111.00000000
Subnet planner

Split 192.168.10.0/24 into smaller networks

4subnets64addresses each