Is the port open?

Checks a TCP port from outside, from every location. Answers the most common support question: is a firewall blocking me?

port.check

What it checks

  • A TCP connection to the given port from every probe location at the same time.
  • The difference between a closed port (the server refuses) and a filtered one (a firewall stays silent).
  • The service banner when the service sends one, for example SMTP or SSH.

Hosting that passes every one of these checks

LimaCloud is tuned so your site and mail pass every one of these checks, and we prove it with a benchmark before and after migration.

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