IPv4 Subnet Calculator

Calculate subnet masks and IP ranges

Calculate IPv4 subnet information including network address, broadcast, host range, and CIDR notation. Free subnet calculator for network planning.

IP Address

CIDR Prefix (24)

/0/8/16/24/32

Subnet Information

Network Address192.168.1.0

Broadcast Address192.168.1.255

Subnet Mask255.255.255.0

Wildcard Mask0.0.0.255

First Usable Host192.168.1.1

Last Usable Host192.168.1.254

Total Hosts256

Usable Hosts254

IP ClassClass C

CIDR Notation192.168.1.0/24

Binary Representation

IP Address:11000000.10101000.00000001.00000000

Subnet Mask:11111111.11111111.11111111.00000000

Network:11000000.10101000.00000001.00000000

Common Subnets Reference

CIDRSubnet MaskUsable Hosts

/8255.0.0.016,777,214

/16255.255.0.065,534

/24255.255.255.0254

/25255.255.255.128126

/26255.255.255.19262

/27255.255.255.22430

/28255.255.255.24014

/29255.255.255.2486

/30255.255.255.2522

/32255.255.255.2551