Subnet Calculator
Calculate network information from CIDR notation. Enter an IP address and prefix length to see subnet details, usable hosts, and more.
Network Information
IP Address
192.168.1.0
Network Address
192.168.1.0
Broadcast Address
192.168.1.255
CIDR Notation
192.168.1.0/24
Subnet Mask
255.255.255.0
Wildcard Mask
0.0.0.255
IP Class
Class C
Network Type
Private
Host Information
Total Hosts
256
Usable Hosts
254
First Usable IP
192.168.1.1
Last Usable IP
192.168.1.254
Common Subnet Masks
/24
→ 255.255.255.0 (254 hosts)
/16
→ 255.255.0.0 (65K hosts)
/8
→ 255.0.0.0 (16M hosts)
/30
→ 255.255.255.252 (2 hosts)
/31
→ Point-to-point (2 hosts)
/32
→ Host route (1 host)