IPv4 subnet calculator
Enter an IPv4 address and a CIDR prefix, such as /24, or a dotted-decimal subnet mask, such as 255.255.255.0.
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Enter an IPv4 address and a CIDR prefix, such as /24, or a dotted-decimal subnet mask, such as 255.255.255.0.
- The theoretical host count excludes the network and broadcast addresses, except for /31 point-to-point links with two addresses and /32 host routes with one address. Reserved address ranges are not subtracted. Calculations run locally on your device; no network scans are performed.
FREQUENTLY ASKED QUESTIONS
How are host addresses counted for /31 and /32?+
The theoretical host count excludes the network and broadcast addresses, except for /31 point-to-point links with two addresses and /32 host routes with one address. Reserved address ranges are not subtracted. Calculations run locally on your device; no network scans are performed.
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Was it useful? Support CalcuPop.
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