After downloading the .rar or .zip from a source like GitHub, extract the masscan.exe .

Masscan requires a packet capture library to function. You must install WinPcap or its modern successor, Npcap .

To scan a range for specific ports, use: masscan -p80,443 192.168.1.0/24 --rate 1000 .

Masscan is an ultra-fast port scanner capable of scanning the entire internet in under 6 minutes. While it is primarily a command-line tool, there are several ways to access a GUI-based experience or run it on Windows. Download & GUI Options

For a standard compiled .exe without a custom GUI, repositories like Arryboom's MasscanForWindows or WalnutMusic740's EXE Files provide pre-built binaries for Windows users.

You can save results in various formats, including grepable text, XML, or JSON for easy importing into other tools.