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Subnet CIDR Calculator
Calculate network address, broadcast address, host range, subnet mask, and more from CIDR notation
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- Subnet CIDR Calculator
Quick Examples
Subnet Details
Network Address
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Broadcast Address
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Subnet Mask
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Wildcard Mask
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Total Hosts
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Usable Hosts
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Host Range
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Prefix Length
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IP Address (Binary)
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Subnet Mask (Binary)
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Subnet Mask (Hex)
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Enter a CIDR address and click Calculate
What Is CIDR Notation?
CIDR (Classless Inter-Domain Routing) notation specifies an IP address and its subnet prefix length using the format IP/prefix. For example, 192.168.1.0/24 means the first 24 bits are the network portion, leaving 8 bits for host addresses. This calculator helps network engineers plan and understand IP subnet allocations.
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