Subnet Mask Calculator

Free networking calculators for CCNA students & engineers

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Free networking calculators for CCNA students & engineers

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Free online subnet mask calculator. Instantly calculate network address, broadcast address, wildcard mask, host range and CIDR notation. Perfect for CCNA students and network engineers.

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Tines — Build agents & automations integrated across your workspace

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Hey Product Hunt! 👋 I'm Faheem, a CCNA student from Pakistan. I built NetCalc because every subnet calculator I found was either bloated, full of ads, or hard to use on mobile. NetCalc is completely free — no signup, no ads, just clean tools that work. Would love feedback from network engineers and CCNA students here. What tools should I add next?

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