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Port Range Scanner – Quick Open Port Checker (Client-Side)

Port Range Scanner – Quick Open Port Checker (Client-Side)

The Port Range Scanner Tool is a speedy, browser-based utility that helps IT professionals and sysadmins check TCP port availability on a given IP or hostname within a specified range.

Whether you’re verifying firewall rules, testing port forwarding, or diagnosing network services, this client-side tool makes it effortless and safe — requiring no installations or background services.

Key Features:

  • Scan TCP ports directly from your browser
  • Fully client-side (JavaScript-based)
  • Dark mode toggle for comfort
  • Range configurable from 1–65535

Use cases include scanning local network devices, auditing port configurations, educational demonstrations, or sneak previews before running Nmap on CLI.

Launch Tool:

Open Port Range Scanner Tool

Related Tools

Learn more: Port scanning overview on Wikipedia

My name is Skylar Pearce, I have been working as a System Administror since 2013 as well some side consulting work. During my career I have worked with everything from Active Directory and vCenter to configuring routers and switches and phone systems, documenting and scripting my way through the whole thing. I have a Security+ certification and am currently working on my PenTest+. Throughout my career I have gained almost all of my knowledge from blogs like this. It is now time for me to pay it back. Over time I have gathered scripts and tricks over the years that I will share on this site. A lot of the posts here will be mainly reference posts, some will be full on how to’s. I am happy to go into more depth on any other topics I go over here, just make a comment on a post. I will do my best to post once a day on weekdays but as I run out of ideas it may slow down. My WordPress skills are still growing so the site will likely get better over time as I learn. You can reach me at contact@allthesystems.com or on LinkedIn