Network CIDR / Subnet Calculator
Enter an IPv4 address and CIDR to instantly get Network, Broadcast, Mask, Host Range, and address counts. (IPv4 only)
Results
Copy values instantly
Network Address
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Broadcast Address
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Subnet Mask
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Wildcard Mask
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Host Range
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Total Addresses
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Usable Hosts
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IP Class (informational)
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Is Private
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Notes
- For /31 and /32, there is no traditional host range.
- Results are calculated for IPv4 only.
- Copy buttons copy values immediately.
Tip: Start with a Quick Example, then change CIDR to see address counts and ranges.