TCP Port Scanner
Check whether TCP ports on a public host are reachable from the server. Useful for firewall checks on infrastructure you own or are authorized to test.
Only scan systems you are explicitly authorized to test. Abuse may be blocked.
Scan settings
Enter a public hostname or IPv4 and ports (max 200). Results stream in over SSE as each batch finishes.
Comma or newline separated; ranges use a hyphen. At most 200 ports.
Examples
Load safe public targets to try the scanner quickly.
Public hosts
Common port sets
Only fills the port list — enter an authorized host above, then start the scan.
Common default ports
Only fills the port list — enter an authorized host above, then start the scan.
Results
Run a scan to see results.
| Port | Status | Latency |
|---|
Recent scans
Click a row to refill the form. Completed scans are saved automatically.
No history yet. Finish a scan to save it here.