Port Scanner

Check which ports are open on any server, domain, or IP. Scan HTTP, HTTPS, SSH, MySQL, RDP, and 18 more services instantly.

All Ports, Simultaneously

Every port is probed in parallel using async non-blocking TCP connections. All 22 ports are scanned concurrently, not sequentially.

Responsible Scanning

Scan timeouts are fixed at 2 seconds per port to respect server resources. Use this tool only on servers you have permission to test.

Queued Bulk Scanning

CSV uploads are processed by background workers with controlled concurrency to avoid network exhaustion while handling large batch jobs.

Frequently Asked Questions

Web browsers operate in a strict security sandbox that blocks direct TCP socket connections to arbitrary ports. This is to prevent malicious web pages from scanning your local network or servers without your knowledge.

All ports are probed simultaneously using Python's asyncio non-blocking concurrency engine. Rather than scanning ports one by one (which would take minutes), every port connection attempt runs in parallel, completing the entire scan in seconds.

Scanning ports on servers you own or have explicit permission to test is completely legal. Scanning servers without authorization may violate computer crime laws. This tool is intended for legitimate server administration, network diagnostics, and security auditing purposes only.

Bulk CSV uploads are dispatched to a dedicated background worker queue. The worker asynchronously scans all ports for each host and compiles the results into a downloadable CSV. Concurrency is carefully controlled to avoid overwhelming the network.