CIDR 计算器 | CIDR Subnet Calculator
Calculate network address, broadcast, subnet mask, and usable hosts from CIDR notation. IPv4 subnet planning made easy.
CIDR Input
Calculation Results
CIDR Notation
192.168.1.0/24
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 Addresses
256
Usable Hosts
254
Binary Breakdown
Network:11000000.10101000.00000001.00000000
Mask:11111111.11111111.11111111.00000000
Network bits:11111111111111111111111100000000(24 / 8)
IP Range
192.168.1.0
192.168.1.255
192.168.1.1 — 192.168.1.254 (254 usable hosts)