Port Checker

Check if TCP ports are open or closed

Check Port Status

Enter a hostname and port to check if it's accessible

About Port Checking

Port Status Types

  • Open: Port is accepting connections
  • Closed: Port is reachable but not accepting connections
  • Filtered: Firewall is blocking the port
  • Timeout: No response within the timeout period

Notes

  • Only TCP ports can be checked (not UDP)
  • Maximum 10 ports per request
  • Private/localhost addresses are blocked
  • Timeout is set to 5 seconds per port
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