Free Online IPv4 Subnet Calculator & CIDR Tool
IPv4 Subnet Calculator
Enter an IP address and select a CIDR prefix to calculate network details instantly.
IP Address
CIDR / Subnet
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Calculate Subnet
Calculation Results
Network Address:
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Subnet Mask:
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Usable Host IP Range:
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Broadcast Address:
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Total Usable Hosts:
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IP Class:
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