network.subnet()
IPv4 subnet ranges · CIDR · masks
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Subnet Calculator
Calculate subnet ranges, CIDR notation, and detailed network information for IPv4 addresses.
Input
Format: network/prefix (e.g., 192.168.1.0/24)
Common Subnets
No subnet calculation yet
Enter a network address in CIDR notation or IP + mask format
Subnet Calculator Guide
CIDR Notation
Network address followed by /prefix length (e.g., /24 = 255.255.255.0)
Network Address
First address in the subnet, used to identify the network
Broadcast Address
Last address in the subnet, used for broadcast messages
Wildcard Mask
Inverse of subnet mask, used in access control lists
Private IP Ranges
10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16
Subnet Planning
Divide networks efficiently based on host requirements
VLSM
Variable Length Subnet Masking for efficient IP allocation
Supernetting
Combining multiple subnets into larger networks