IP Subnet Calculator
Calculate subnet masks, network ranges, host counts, and binary representations for IPv4 addresses
Enter an IP address with CIDR prefix (e.g. 192.168.1.0/24)
Examples:
Class C Private (RFC 1918)
Network Information
Network Address
192.168.1.0
Broadcast Address
192.168.1.255
Subnet Mask
255.255.255.0
Wildcard Mask
0.0.0.255
First Usable Host
192.168.1.1
Last Usable Host
192.168.1.254
Total Hosts256
Usable Hosts254
Reverse DNS
1.168.192.in-addr.arpa
CIDR Prefix /24
/0/8/16/24/32
Address Details
CIDR Notation
192.168.1.0/24
IP Integer
3232235776
IP ClassC
IP TypePrivate (RFC 1918)
Host ScaleClass C scale — 254 hosts