Visual Subnet Calculator
Enter an IPv4 address and CIDR prefix to instantly see the network address, broadcast address, usable host range, subnet mask, wildcard mask, and a visual 32-bit subnet map.
Enter subnet details
Subnet result
Enter an IPv4 address and CIDR prefix to visualize the subnet.
Network and host bits
The CIDR prefix tells you how many of the 32 IPv4 bits identify the network. The remaining bits identify individual addresses inside that network.
Usable host range
For most subnets, the first address is the network address and the last is the broadcast address, leaving the addresses between them for hosts.
Special /31 and /32 cases
A /31 is commonly used for point-to-point links, while a /32 represents one exact IPv4 address rather than a traditional host range.
Frequently asked questions
What does CIDR mean?
CIDR stands for Classless Inter-Domain Routing. The number after the slash shows how many bits belong to the network portion.
What is a subnet mask?
A subnet mask is the dotted-decimal version of the CIDR prefix. For example, /24 equals 255.255.255.0.
What is a wildcard mask?
The wildcard mask is the inverse of the subnet mask. It is often used in access-control lists and routing configurations.
How many usable hosts are in a /24?
A traditional /24 has 256 total addresses and 254 usable host addresses after excluding the network and broadcast addresses.
Results are estimates generated locally in your browser using standard technical formulas and public specifications. They are for informational and planning purposes only. Verify configuration, compatibility and production values against official documentation before deployment. VisionVix accepts no liability for technical decisions based on this tool's output.
