[email protected]
UtilityAdda
Secure•100% Client-Side

Net Port Checker

Free tool — runs entirely in your browser.

Share Tool:

Related Tools

11 Tools
Net My IpNet Dns LookupNet Ping TestNet Subnet CalculatorNet Port CheckerNet Ssl CheckerNet Headers InspectorNet Whois LookupNet User AgentNet Redirect CheckerNet Websocket Tester
Client-Side Web Port Inspector

Port Accessibility Checker

Test common web service ports on any host directly from your browser.

Port 80 (HTTP Web)
Port 443 (HTTPS Secure Web)
Port 8080 (HTTP Alternate)
Port 8443 (HTTPS Alternate)
Port 3000 (Node.js / React Dev)
Port 5000 (Flask / Express Dev)
Port 8000 (Django Dev)

Calculator Guide & Math

1What is a Web Port Checker?

The Port Checker tests whether standard web service ports (80, 443, 8080, 8443, 3000, 5000, 8000) are open and accepting HTTP/HTTPS connections on a target host directly from your client browser.

2Step-by-Step Usage Guide

You launched a Node.js web app on port 3000 or HTTP server on port 80 and want to test accessibility.

  1. Enter target hostname or domain (e.g. portquiz.net or your-server.com)
  2. Click "Check All Ports" to run automated connection probes across standard web ports
  3. Inspect individual port statuses (Open vs Closed/Blocked) along with connection latency
Result Summary: Real-time status breakdown for ports 80, 443, 8080, 8443, 3000, and 5000.

Frequently Asked Questions

A network port is a 16-bit number (0-65535) identifying a specific process or network service on a server.