84  masscan(1) - Kailash Tool Reference

84.1 masscan

masscan - Mass IP port scanner — the whole internet in minutes.

Layer CLASSIC
Category c-01-information-gathering
Safety class safe
Licence AGPL-3.0-only
Upstream github.com/robertdavidgraham/masscan

84.1.1 NAME

masscan - Mass IP port scanner — the whole internet in minutes.

84.1.2 SYNOPSIS & usage

Derived from the upstream README at generation time; verify against --help where the tool is installed.

    <port state> <protocol> <port number> <IP address> <POSIX timestamp>
    open tcp 80 XXX.XXX.XXX.XXX 1390380064

84.1.3 DESCRIPTION (upstream)

This is an Internet-scale port scanner. It can scan the entire Internet in under 5 minutes, transmitting 10 million packets per second, from a single machine. Its usage (parameters, output) is similar to nmap, the most famous port scanner. When in doubt, try one of those features – features that support widespread scanning of many machines are supported, while in-depth scanning of single machines aren’t. Internally, it uses asynchronous transmission, similar to port scanners like scanrand, unicornscan, and ZMap. It’s more flexible, allowing arbitrary port and address ranges. NOTE: masscan uses its own ad hoc TCP/IP stack. Anything other than simple port scans may cause conflict

84.1.4 CONFIGURATION (detected)

Config-surface markers detected in the upstream README (8 matches, e.g. unittests.yml, unittests.yml). A full config reference page for this tool is queued under the config-page policy — this line is the detection record, not the page.

84.1.5 SEE ALSO

ref: pin - verified 2026-10-14