Web-based CIDR calculator for subnet planning, IP allocation, and networking education. Calculates total, usable, network, and broadcast addresses.
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Updated
Jun 14, 2026 - HTML
Web-based CIDR calculator for subnet planning, IP allocation, and networking education. Calculates total, usable, network, and broadcast addresses.
Professional IPv4 & IPv6 Subnet Calculator built with HTML, CSS & JavaScript. Features binary view, address classification, click-to-copy results, and full CIDR support for fast and accurate subnet calculations.
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