PortScan.com

Free plan APIWeb

What PortScan.com is

PortScan.com is a free TCP port scanner that checks the public IP address sending the request and reports ports as open, closed, or filtered. A fast scan checks 32 common ports in about 20 seconds; a deep scan checks all 65,535 TCP ports and includes service version detection. The target is set by the visitor’s connection, so the site cannot scan an IP address entered by the user.

The service has polling and streaming v2 API endpoints, supports IPv4 and IPv6, and requires no signup or API key. Its API supports webhook notifications when scans finish or fail, for workflows such as CI/CD pipelines and monitoring scripts. An MCP server provides fast_scan and deep_scan tools, with setup instructions for several coding and chat applications. Scans are TCP-only, and detailed results expire after 24 hours. The site describes the tool as a basic port check, not a security audit, and cautions that results may be incomplete or inaccurate.

Who it suits

It suits people checking the public IP address of a server, or using scans in CI/CD pipelines and monitoring scripts. It is not suited to scanning an IP address other than the one making the request.

What it does well

Free plan with fast and deep scan modes
Deep scans cover all 65,535 TCP ports
API needs no signup or API key
Webhook callbacks report scan completion or failure
Supports IPv4 and IPv6

What to know first

Cannot scan an arbitrary target IP
API supports TCP scans only
Detailed scan results expire after 24 hours
Results may be incomplete or inaccurate

Limits

The free scanner only checks the public IP address making the request; it does not accept another target IP. API scans are TCP-only, detailed results expire after 24 hours, and documented rate limits include 2,000 fast scans per ASN per hour, one deep scan per IP per five minutes, 200 deep scans per ASN per hour, and 30 requests per IP per minute at the edge.

Plans

Plan	Billed and limits	Price
Free online port scanner	Scans only the public IP address of the request · Fast scan: 32 TCP ports · Deep scan: all 65,535 TCP ports	Free

As portscan.com lists them, read 7 Oct 2026. The maker's own page has the final word.

Getting started

Visit https://portscan.com/ to run a scan of the public IP address making the request.
Choose a fast scan of 32 common ports or a deep scan of all 65,535 TCP ports.
For automated use, call the API polling endpoints or streaming v2 endpoint without an API key.
Configure a webhook callback if scan completion or failure notifications are needed.
For MCP use, follow the setup instructions for a listed client such as Claude Code, Cursor, VS Code, or ChatGPT.

Verdict

PortScan.com offers fast and deep checks of the requesting public IP, with API access and automation options. Treat its results as a basic port check rather than a security audit.

Questions

Is PortScan.com free?

Yes. The Free online port scanner costs nothing and includes fast scans of 32 TCP ports and deep scans of all 65,535 TCP ports.

Can I scan a different IP address?

No. The target is set from the visitor’s connection, and the site does not let users enter another IP address.

Does it offer an API?

Yes. The API has polling endpoints and a streaming v2 endpoint, supports IPv4 and IPv6, and requires no signup or API key.

What platforms and integrations are available?

The service is listed for API and web platforms. MCP setup instructions are provided for Claude Code, Cursor, Windsurf, Claude Desktop, VS Code, Gemini CLI, Codex, and ChatGPT.

How long are scan results kept?

Detailed scan results are kept for 24 hours, and completed scans have a seven-day history visible from the same IP. The site says scan metadata is logged for 180 days.

Is this a security audit?

No. The homepage describes the service as a basic port check rather than a security audit and says results may be incomplete or inaccurate.

Facts from PortScan.com's own pages

API: The API supports polling endpoints and a streaming v2 endpoint, requires no signup or API key, and supports IPv4 and IPv6. · api.portscan.com, 7 Oct 2026
Automation: The API supports webhook callbacks on scan completion or failure and describes CI/CD pipelines and monitoring scripts as use cases. · api.portscan.com, 7 Oct 2026
Data handling: The site says its scanning nodes are in the Netherlands, France, and the UK, and scan results are stored in an EU database. · portscan.com, 7 Oct 2026
Integrations: The MCP server provides fast_scan and deep_scan tools and lists setup instructions for Claude Code, Cursor, Windsurf, Claude Desktop, VS Code, Gemini CLI, Codex, and ChatGPT. · mcp.portscan.com, 7 Oct 2026
Intended users: The API documentation describes use for self-checking by servers, CI/CD pipelines, and monitoring scripts. · api.portscan.com, 7 Oct 2026
Limitations: The homepage says the scan is a basic port check, not a security audit, and results may be incomplete or inaccurate. · portscan.com, 7 Oct 2026
Limits: The API supports TCP scans only, does not allow arbitrary target IPs, and scan results expire after 24 hours. · api.portscan.com, 7 Oct 2026
Privacy: The site says it has no user accounts, sends no data to third parties, and uses a self-hosted Plausible instance for aggregate page views without cookies or personal data. · portscan.com, 7 Oct 2026
Purpose: Checks TCP ports on the public IP address making the request and reports whether ports are open, closed, or filtered. · portscan.com, 7 Oct 2026
Rate limits: The API documents limits of 2,000 fast scans per ASN per hour, one deep scan per IP per five minutes and 200 per ASN per hour, plus an edge limit of 30 requests per IP per minute. · api.portscan.com, 7 Oct 2026
Retention: The site says scan metadata is logged for 180 days, detailed scan results are kept for 24 hours, and a seven-day history of completed scans is visible from the same IP. · portscan.com, 7 Oct 2026
Scan modes: Fast scan checks 32 common ports in about 20 seconds; deep scan covers all 65,535 TCP ports and includes service version detection. · portscan.com, 7 Oct 2026
Target restriction: The scan target is set from the visitor’s connection, and the site does not let users enter another IP address. · portscan.com, 7 Oct 2026

Where PortScan.com stands on Freedom251

Port Scanner Software#12 of 26