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Nmap

Probes the TCP ports on the visitor's public IP address from the open internet and reports each as open, closed or filtered.
Free tierFor developers
portscan.com ↗Wikipedia
Open portscan.comAlternativesSet it up for my teamIs Nmap yours? Claim the card →
At a glanceswept Oct 13, 2026

≈ 214visits/mo

Little sign of use · estimate, read Oct 13, 2026

For
People checking which ports their own public IP exposes, such as home lab owners and port forwarding users.
Runs as
API
Used for
  • check which ports respond on your public IP
  • verify port forwarding for a home server
  • automate port scans from scripts and pipelines
Worth knowingcomputed from what we read · each with its source
How a program reaches itfound, not claimed · read Oct 18, 2026

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Not it? Say what you need

beta

Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is Nmap?

    Probes the TCP ports on the visitor's public IP address from the open internet and reports each as open, closed or filtered.

  • Who is Nmap for?

    People checking which ports their own public IP exposes, such as home lab owners and port forwarding users.

  • Do people use Nmap?

    Little sign of use: ≈ 214 visits/mo · estimate, 2026-10.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk