Port Scanner

To prevent abuse, scans are limited to common service ports only (max 25 per scan), 15 requests per minute, 3 unique targets per 5 minutes, and 50 scans per day. Private/local IPs cannot be scanned.

How to Use

Enter a hostname or IP address and specify which ports to scan. Use comma-separated values (e.g., 80,443,22) or a range (e.g., 1-100). Click Scan to check each port. The tool connects from our server and reports whether each port is open (accepting connections) or closed/filtered.

About Port Scanning

Port scanning is a technique used by network administrators and security professionals to identify open ports and services running on a server. It helps with security auditing, firewall verification, and troubleshooting network connectivity issues. Each port corresponds to a specific service or protocol.

Common Ports Reference