Calculate your IPv4 subnet parameters. Determine Network Address, Broadcast Address, and Usable IP Range instantly with CIDR notation.
| Network Address | 0.0.0.0 |
|---|---|
| Subnet Mask | 0.0.0.0 00000000.00000000.00000000.00000000 |
| Broadcast Address | 0.0.0.0 |
| Usable Host Range | 0.0.0.0 - 0.0.0.0 |
| Total Usable Hosts | 0 |
| IP Class | A |
Subnetting is the practice of dividing a network into two or more smaller networks. It increases routing efficiency, enhances network security, and reduces the size of the broadcast domain.
192.168.1.10.255.255.255.0./24.Engineers need to know how many usable IPs are available in a block to ensure they can connect all required devices (servers, printers, workstations).
Knowing the correct gateway and broadcast address is essential for configuring routers and firewalls correctly.
Essential for IT Pros.
When segmenting a large network into VLANs, calculating the correct CIDR notation (e.g., /26 vs /24) ensures you don't waste IP addresses while still leaving room for growth.
Maximize address usage.
A /32 subnet contains only 1 IP address. It is often used for specific host routes or loopback interfaces where no other hosts need to be reached on that subnet.
A /24 subnet has 256 total addresses. However, 2 are reserved (network and broadcast), leaving 254 usable host addresses.