Subnet Calculator (IPv4)
- Network
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- Broadcast
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- First usable
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- Last usable
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- Subnet mask
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- Wildcard mask
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- Total addresses
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- Usable hosts
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About this tool
Subnet Calculator (IPv4) is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
Category: Developer Tools — Advanced. Browse more Developer Tools — Advanced tools.