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Octet
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Octet
Break down any subnet — bit by bit.
Octet takes any IPv4 address and prefix and instantly shows the network and broadcast addresses, usable host range, subnet and wildcard masks, and host counts — with a live 32-bit visualizer you can click to flip bits and drag to move the mask. It handles the tricky /31 and /32 cases, flags private, loopback and CGNAT ranges, and runs entirely offline with no login. Built end-to-end with AI, and the whole thing is one downloadable, MIT-licensed HTML file.
Built with Claude CodeNo login requiredFree to tryVerified workingOpen sourceDeveloper Tools
#networking#subnet#cidr#ip-address#devtools
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- 2. Drop it on any static host (Vercel/Netlify/S3/your server)
- 3. Done — zero dependencies.
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