Visual Subnetting Tool with Binary Representation
This tool calculates the Network Address (start of the subnet), Broadcast Address (end of the subnet), and the Usable Host Range for devices. Subnetting allows you to divide a large network into smaller, more efficient, and secure sub-networks.
■ Network bits ■ Host bits
Design your network by adding subnets. Enter a base network and the tool will calculate efficient subnet allocation.
Enter a base network and subnet requirements above, then click "Generate Subnet Design"
| CIDR | Subnet Mask | Wildcard Mask | Total IPs | Usable Hosts | Common Use |
|---|
| Class | Range | CIDR | Total Addresses | Common Use |
|---|---|---|---|---|
| Class A | 10.0.0.0 - 10.255.255.255 | 10.0.0.0/8 | 16,777,216 | Large enterprises |
| Class B | 172.16.0.0 - 172.31.255.255 | 172.16.0.0/12 | 1,048,576 | Medium networks |
| Class C | 192.168.0.0 - 192.168.255.255 | 192.168.0.0/16 | 65,536 | Home/Small office |
| Host Bits | Total IPs (2^n) | Usable Hosts | CIDR |
|---|
| Prefix | Usage | Description |
|---|---|---|
| ::1/128 | Loopback | Local host address |
| fe80::/10 | Link-Local | Auto-configured, non-routable |
| fc00::/7 | Unique Local | Similar to IPv4 private addresses |
| 2000::/3 | Global Unicast | Publicly routable addresses |
| ff00::/8 | Multicast | One-to-many communication |