We’ve added a new Subnet Calculator.
- One-shot calculation: Enter an IP address and prefix to instantly get the network address, broadcast, usable host range, subnet mask, and wildcard mask.
- Common-prefix chips: Apply common prefixes from /8 to /30 with a single click.
- Prefix reference table: Click any row to recalculate with that prefix.
- Copy result: Copy the full calculation as text with one click.
- All calculations happen entirely in your browser — your IP is never sent to or stored on a server.