Random port generator

  1. Options
  2. Result

Options

IANA defines system ports as 0-1023, user ports as 1024-49151 and dynamic/private ports as 49152-65535. Always verify that a generated port is free on the target host.

Generate random ports

Create a list of random ports for development configs, local services and test environments.

Choose an IANA range, exclude common services or custom port ranges, and export the secure random result as CSV or JSON. A generated value must still be checked on the target host.

Quick start

Generate unique random ports from an IANA range with common services and custom ranges excluded.

  1. Choose an IANA range or set your own
  2. Add ports and ranges to exclude
  3. Generate, copy or export CSV/JSON
✓ The tool runs directly in the browser and is ready for quick checks without installing software.
✓ Input can be cleared and recalculated immediately, which is useful for repeated small tasks.
✓ Use fullscreen mode when you need more space for long text, structured data or large result blocks.
✓ Copy buttons are available on generated output so results can be reused in code, documents or support chats.
✓ Most operations are deterministic: the same input and options produce the same output.
✓ For sensitive content, prefer local browser tools and review the result before sharing it further.

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