Masscan

TCP port scanner that spews SYN packets asynchronously, scanning the entire Internet in under 5 minutes

Growing steadily this week

7d +0.04% +10 stars in 7d

30d +0.22% +56 stars in 30d

90d Not tracked yet — first tracked 2026-08-08

25,918 → 26,076 stars since Aug 8

25,954 Stars 3,246 Forks 414 Open issues

Growing steadily this week. Coverage includes a Hacker News discussion (469 points) on Sep 28 and a Hacker News discussion (287 points) on Oct 9.

Generated Oct 16, 2026

Timeline

💬 5 Hacker News discussions

HN Masscan: TCP port scanner, scanning entire Internet in under 5 minutes Sep 28, 2021 469 pts
HN Some idiot is using your tool to mass scan our network Oct 9, 2020 287 pts
HN MASSCAN: Mass IP port scanner Aug 10, 2016 61 pts
HN Masscan: Scan the entire Internet in under 5 minutes Dec 27, 2014 147 pts
HN Masscan: scan the entire Internet in under 6 minutes, 10 million packets/second Sep 16, 2013 138 pts

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