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IPv4 Subnet Calculator — result sheet
Calculate the network, mask, broadcast, address range, and usable hosts for an IPv4 address and CIDR prefix.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Network = address AND mask; broadcast = network OR inverted mask; usable hosts follow traditional IPv4 /31 and /32 conventions.
Show the exact IPv4 subnet boundaries and host capacity for a CIDR prefix. /31 and /32 are reported with their point-to-point and single-host conventions.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- IPv4 address — Use four decimal octets, for example 192.168.1.10.
- CIDR prefix length — minimum 0; maximum 32
Worked example
| Input | Value |
|---|---|
| IPv4 address | 192.168.10.42 |
| CIDR prefix length | 24 |
Network 192.168.10.0/24; usable range 192.168.10.1–192.168.10.254; 254 usable hosts.
Assumptions and limits
- IPv4 addresses use dotted decimal notation and prefixes from /0 through /32.
- Traditional network/broadcast exclusions apply except for /31 point-to-point and /32 host routes.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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