𧎠IP Subnet Calculator
⥠Output
âšī¸ About IP Subnet Calculator
The IP Subnet Calculator is a professional utility for network engineers and students. It calculates all the critical technical details of a subnet based on an IP address and a mask.
Key features:
- Network Boundary: Identifies the first address (Network ID) and last address (Broadcast).
- Capacity: Shows both total IP count and usable host count.
- Range: Provides the exact range of IPs assignable to devices.
đ How to use IP Subnet Calculator
- 1. Enter any IP address within the subnet.
- 2. Provide the mask in CIDR format (e.g., <code>24</code>) or decimal (e.g., <code>255.255.255.0</code>).
- 3. Click 'Run Tool' to perform the calculation.
â Frequently Asked Questions
What is a 'Usable' host?
Most networks reserve the first (.0) and last (.255) addresses for the network identity and broadcast, meaning they cannot be assigned to devices like PCs or printers.
Does this work for IPv6?
This specialized calculator is designed for IPv4. IPv6 uses a different address structure and prefix methodology.
What is CIDR?
CIDR stands for Classless Inter-Domain Routing. It is the modern way of describing subnet masks using bit-counts (like /24).
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