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PortScan.com
What it is
PortScan.com is a free cloud service that checks TCP ports on the public IP address making the request. A fast scan checks 32 common ports in about 20 seconds, while a deep scan checks all 65,535 TCP ports and adds service version detection. The target is determined by the visitor’s connection, so another IP address cannot be entered. An API provides polling endpoints and a streaming v2 endpoint without signup or an API key, supporting IPv4 and IPv6. Webhook callbacks can report scan completion or failure for uses such as CI/CD pipelines and monitoring scripts. The MCP server offers fast_scan and deep_scan tools with setup guidance for several coding and chat applications. API scans are TCP-only, and detailed results expire after 24 hours. JSON export is available. PortScan.com says the service is a basic port check, not a security audit, and results may be incomplete or inaccurate. Scanning nodes are listed in the Netherlands, France, and the UK, with results stored in an EU database.
For and against
For
- Free online scanning
- Fast and deep scan modes
- API requires no signup or key
- IPv4 and IPv6 support
- Webhook callbacks and JSON exports
Against
- Cannot scan an arbitrary IP address
- TCP scans only
- Detailed results expire after 24 hours
- Not a security audit; results may be incomplete
The verdict
PortScan.com provides straightforward public-IP TCP checks with browser, API, and MCP access. Its target restriction and short result retention matter for users planning repeated or third-party scans.
Who it suits
It suits people checking the publicly reachable ports of their current connection, as well as servers, CI/CD pipelines, and monitoring scripts using the API. It is not intended as a complete security audit.
Plans and prices
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
Read 7 Oct 2026 · portscan.com
On the record
- 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 · read 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 · read 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 · read 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 · read 7 Oct 2026
- Intended users
- The API documentation describes use for self-checking by servers, CI/CD pipelines, and monitoring scripts.api.portscan.com · read 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 · read 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 · read 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 · read 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 · read 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 · read 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 · read 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 · read 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 · read 7 Oct 2026
