Network
All tools →IP Subnet Calculator
CIDR → network, broadcast, mask, usable hosts. — free, private, client-side. API: POST /api/v1/tools/ip-subnet-calculator
Result
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Runs 100% in your browser — no data leaves your device. For programmatic use:
curl -X POST /api/v1/tools/ip-subnet-calculator -d '{ "input": "hello" }' → JSON. See /docs/api.