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Subnet Calculator (CIDR).
Compute IP subnet bounds, binary breakdowns, wildcard masks, and host quantity ranges.
Input Parameters
Subnet Mask-
Network ID-
Broadcast-
Total Usable-
Computed Results
Primary Metric
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-
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Frequently asked questions.
What is CIDR notation?
CIDR (Classless Inter-Domain Routing) notation expresses an IP address and its associated subnet mask as a suffix indicating the number of network bits. For example, /24 means the first 24 bits are the network portion, giving a subnet mask of 255.255.255.0.
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