Mass Scan – a TCP port scanner scan entire Internet in under 5 minutes.


Mass Scan is a TCP port scanner, spews SYN packets asynchronously, scanning entire Internet fast


How to get this tool

To use this tool, please use a method listed below.

In a Linux (Debian OS), run the following command(s).

sudo apt-get install git gcc make libpcap-dev

git clone

cd masscan



Download directly from the following link:


How to execute

#Usage is similar to nmap. To scan a network segment for some ports:


masscan -p80,8000-8100
# This will:
# scan the 10.x.x.x subnet, all 16 million addresses
# scans port 80 and the range 8000 to 8100, or 102 addresses total
# print output to <stdout> that can be redirected to a file





Next steps:


This article was contributed by Jason Jacobs from Guyana. Jason is a member of the Caribbean CSPA.

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