IPv4 Subnet Calculator

Network address, broadcast, host range, wildcard mask and binary breakdown for any IPv4 CIDR block.

Accepts 10.0.0.5/26, 10.0.0.5 255.255.255.192, or a bare IP.

Results for 198.51.96.0/19

198.51.96.0/19 is the network in CIDR notation · Public
Network address
198.51.96.0
Broadcast address
198.51.127.255
Subnet mask
255.255.224.0
Wildcard mask
0.0.31.255
Total addresses
8,192
Usable hosts
8,190 (excludes network & broadcast)
First usable host
198.51.96.1
Last usable host
198.51.127.254
CIDR notation
198.51.96.0/19
IP type
Public

How the bits line up

Octets (binary)
IP address11000110001100110110000000000000
Subnet mask11111111111111111110000000000000
Network11000110001100110110000000000000
Broadcast11000110001100110111111111111111

The mask's 19 leading ones select the network portion; the remaining 13 bits are available for hosts.

Keep exploring

See every fact about the /19 subnet mask, plan multiple subnets with the VLSM calculator, or convert ranges on the range-to-CIDR tool.