IP Calculator & Network Planner
Calculate subnets, masks, hosts and usable IP ranges.

IP Calculator & Network Planner

Calculate subnets, masks, hosts and usable ranges.

IP
How to use

Enter an IP and CIDR to get network, broadcast and usable range. Provide hosts to suggest an ideal prefix.

IP + CIDR calculation
Host-based planner
Notes
  • Network: first address of the block.
  • Broadcast: last address of the block.
  • Mask: defines the subnet size.
  • Wildcard: inverse of the mask (used in ACLs).
  • Usable hosts: valid device addresses.
  • IP class: historical class (A, B, C).
Preview
Network

192.168.1.0

Broadcast

192.168.1.255

First host

192.168.1.1

Last host

192.168.1.254

Mask

255.255.255.0

Total addresses

256

Usable hosts

254

Suggested CIDR

/26

Suggested mask

255.255.255.192

Wildcard mask

0.0.0.255

IP in binary

11000000.10101000.00000001.00001010

IP class

C