Summarize an inclusive IPv4 or IPv6 range into exact CIDR blocks. Calculations run in your browser and are capped at 256 blocks.
Represent an inclusive IPv4 or IPv6 address range as exact CIDR blocks.
Both addresses must use the same family. Results are local and capped at 256 ranges.
The generated blocks cover the inclusive range exactly. This does not check routes, reservations or address ownership.
Summarize an inclusive IPv4 or IPv6 range into exact CIDR blocks. Calculations run in your browser and are capped at 256 blocks.
Review the limits and privacy notes shown with the tool. Important configuration or security decisions should be checked against authoritative systems and your organization’s approved procedures.
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