Check which ports are open on a domain or IP address.
Enter a domain name or IP address to scan for open ports.
Port scanning is a technique used to identify open ports and services on a network host. It's an essential tool for network administrators and security professionals to assess the security posture of systems.
A port scanner sends packets to a range of port addresses on a host, and analyzes the responses to determine if ports are open, closed, or filtered. Different scanning techniques (like TCP connect, SYN, or UDP scans) can be used depending on the specific requirements.
Port scanning without permission may be illegal in some jurisdictions and could be considered a security breach. Always ensure you have proper authorization before scanning any systems you don't own. This tool is provided for educational and legitimate network administration purposes only.