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developer validator

Port Validator

Check port numbers for valid ranges before using them in configs.

Results

Processing…
Status
Processing...
Details
Processing...

Rules & checks

Accepts integer ports from 1 to 65535.

Rejects non-numeric and out-of-range values.

When to use it

  • Validate port inputs in config forms or CLI arguments
  • Check service definitions before deploying
  • Quick sanity check for firewall or proxy configs

Tips

  • Reserve low ports for system services
  • Document whether your service expects TLS on the chosen port

Examples

Valid port

  • 8080 -> valid

Invalid port

  • 70000 -> invalid (out of range)

FAQs

Does this check if the port is open?
No. This only validates the numeric range.
Can I validate ranges?
This tool validates single ports; use a range-specific tool for spans.

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