How does the Port Checker work?

Enter a target domain or IP address and port numbers, then click the Check button. The tool uses online APIs to check port status and displays the results. Everything runs locally in your browser — your data is never sent to a server.

Is the Port Checker free to use?

Yes, this tool is completely free with no signup required. All checks run locally: the target domain or IP and port numbers are processed on your device, never sent to a server — ensuring complete privacy and security.

What does the Port Checker report include?

The report includes the status of each requested port (open/closed), common port names, and nmap command suggestions for manual verification. All checks run locally in your browser for instant, private results.

Port Checker

Check if ports are open on specified IP/domain, common ports list (80/443/22/3306 etc.), quick scan

Target Domain or IP Port (comma-separated, multiple ports)

Quick Select: HTTP/HTTPS All Common SSH MySQL MongoDB

📊 Result Chart

⚠️ Note: Browsers cannot directly detect port open status. This tool uses online APIs for auxiliary detection. Results may vary.

Common Ports:
21 FTP 22 SSH 25 SMTP 53 DNS 80 HTTP 110 POP3
143 IMAP 443 HTTPS 3306 MySQL 5432 PostgreSQL 6379 Redis 27017 MongoDB

What is Port Checker?

Port Checker is a free online tool that runs entirely in your browser. No download or signup needed — enter a target domain or IP address and port numbers to get results instantly. All data is processed locally.

Use Cases

Check if web server ports (80/443) are accessible
Verify database ports (3306/5432/6379) are open
Test SSH connectivity (port 22)
Quick network diagnostic for common services

Key Features

Completely Free: No registration, no limits
Privacy Safe: Data never leaves your browser
Cross-Platform: Any modern browser
Zero Dependencies: Open and use

Port Checker

What is Port Checker?

Use Cases

Key Features

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