Old Content
This content is old! It’s still useful, but it’s old, and there may be bit rot, newer/better tools or ways to do things. Sanity check and do your research.
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3CIPCalc IP Subnet mask calculator from 3Com.
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ipsubcal.zip Simple IP Subnet mask calculator. Does not need to be installed, just unzip and run.
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ipcalc.zip v1.02 Net3 Group’s IP Subnet mask calculator. Does not need to be installed, just unzip and run.
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ipcalc2.zip v2.02 Net3 Group’s IP Subnet mask calculator. Must run a setup program.
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Hymie’s IP Subnet mask calculator For the Palm Pilot.
Old Content
This content is old! It’s still useful, but it’s old, and there may be bit rot, newer/better tools or ways to do things. Sanity check and do your research.