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IPv4 Subnet Calculator:Simplify Your Network Planning

The IPv4 Subnet Calculator is very  powerful & user friendly online tool which is designed  to help network administrators, IT professionals, students, and enthusiasts quickly analyze IP address ranges and subnet details. By simply entering an IP address and a subnet mask, users can instantly calculate and view vital network information in an organized and clear format.

This tool supports dotted-decimal subnet mask input (e.g., 255.255.255.0), making it easy to work with familiar values used in most real-world networking setups. Once the IP and subnet mask are entered and the Calculate button is clicked, the tool displays all essential results below without refreshing the page. A Reset button is also available for clearing the fields quickly and starting a new calculation.

The result section includes

• Network Address the starting point of the subnet.

• Broadcast Address the last IP used for broadcasting data within that subnet.

• First and Last Usable IP Addresses   the usable IP range.

• Number of Usable Hosts   total number of devices that can be connected.

• Wildcard Mask   useful for access control lists (ACLs).

• CIDR Notation   a compact format (e.g., /24) representing the subnet.

• Subnet Mask in Binary  helps understand bit-level networking.

• IP Class   Categorizes IP (Class A, B, C, etc.).

An extra IPv4 Class Table is also shown to explain the range and purpose of each IP class.

This tool is fully responsive and works perfectly on desktops, tablets, and smartphones. It’s optimized for WordPress, ensuring it blends into any theme without breaking headers, footers, or sidebars.

Whether you’re designing a network or learning subnetting, this colorful and modern calculator simplifies complex tasks and helps you understand networking more clearly.