---
title: "Port Scanner - Free Tool | Bit Refinery"
url: "https://bitrefinery.com/tools/port-scanner"
description: "Test if common ports are open, closed, or filtered on any host or IP. Useful for firewall and misconfiguration debugging."
lastmod: "2026-08-01"
source: "auto-generated from SSG HTML"
---

# Port Scanner

Network & Connectivity

Test if common ports are open, closed, or filtered on any host or IP. Useful for firewall and misconfiguration debugging.

Host or IP Address

Ports (comma-separated, max 50)

Quick Add