IPv4 Subnet & CIDR Calculator
Analyze network boundaries, usable host ranges, binary masks, and IP classifications
Standard IPv4 dotted-decimal
255.255.255.0
Network Subnet (CIDR)
192.168.1.0/24
254 Usable Hosts
Private (RFC 1918)
Usable Host IP Range
192.168.1.1 – 192.168.1.254
First and last assignable nodes
Broadcast Address
192.168.1.255
Subnet directed broadcast
Subnet Mask (Dotted)
255.255.255.0
Wildcard: 0.0.0.255
Total IP Addresses
256 Addresses
Class C Network
Binary Network / Host Bit Distribution
IP:
Mask:
Network Bits (24)
Host Bits (8)
IPv4 Subnet Mask & Host Capacity Guide
CIDR
Subnet Mask
Total IPs
Usable Hosts