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Calculate IP ranges, subnet masks, and broadcast addresses for any IPv4 CIDR block. Precise and instant networking tool.
192.168.1.0
255.255.255.0
192.168.1.255
/24
192.168.1.1
192.168.1.254
256
254
11111111.11111111.11111111.00000000
Subnetting is the process of dividing a network into smaller, more manageable sub-networks. CIDR notation is the standard way to represent these networks. Our calculator helps you visualize how many hosts are available in a specific range and what the boundaries of your network are.
The first IP in the range, identifies the network itself.
The last IP, used to send data to all hosts on the subnet.
Determines which part of an IP address is the network and which is the host.
Developers can instantly utilize the CIDR Calculator Online Free to format, validate, and process data without writing custom scripts, saving hours of development time.
Because the CIDR Calculator Online Free operates 100% on the client-side, security professionals and enterprise users can safely process sensitive strings and configuration files without risking server-side data leaks.
DevOps and system administrators can use CIDR Calculator Online Free for quick verification and generation of server configurations directly in the browser.
Yes, every tool on multidevtools, including the CIDR Calculator Online Free, is completely free with absolutely no usage limits or premium paywalls.
No. We strictly prioritize your privacy. The CIDR Calculator Online Free is built using a modern 100% client-side architecture. Your inputs never leave your browser and are never transmitted to our backend servers.
Absolutely! The CIDR Calculator Online Free features a highly responsive UI optimized for developers on the go, functioning perfectly on mobile phones, tablets, and desktop environments.
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