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Two developer & design tools, side-by-side. See which fits your task.
Developer & Design
Calculate IP ranges from CIDR notation or convert IP ranges to CIDR blocks.
Open IP Range CalcYour specific task is iana port numbers — copy-paste ready reference card. Open the page, drop your input, get the result — typically under a second.
Your goal is calculate ip ranges from cidr notation or convert ip ranges to cidr blocks. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. Iana Port focuses on iana port numbers — copy-paste ready reference card; IP Range Calc focuses on calculate ip ranges from cidr notation or convert ip ranges to cidr blocks. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both Iana Port and IP Range Calc work without signup. We only ask for an email if you decide to subscribe to a paid plan.