Which Web Server Is Being Used?


Scott Campbell

When you visit a website, have you ever wondered which web server is being used to serve that website? In this article, we will explore the different types of web servers and how to determine which one is being used.

What is a Web Server?

A web server is a software application that handles incoming requests from clients (usually web browsers) and delivers the requested resources, such as HTML documents, images, or other files. It acts as an intermediary between the client and the server-side application.

Types of Web Servers

There are several popular web servers available, each with its own set of features and advantages. Let’s take a look at some of the most commonly used ones:

  • Apache HTTP Server: Apache is the most widely used open-source web server software. It is known for its stability, security, and flexibility. Apache supports various operating systems and can be extended through modules.
  • Nginx: Nginx (pronounced “engine-x”) is another popular open-source web server known for its high performance and low memory footprint.

    It excels at handling concurrent connections and static content delivery.

  • Microsoft Internet Information Services (IIS): IIS is a web server developed by Microsoft for Windows operating systems. It offers excellent integration with other Microsoft products and provides robust security features.
  • Litespeed: Litespeed is a lightweight high-performance web server designed to replace Apache while maintaining compatibility. It boasts impressive caching capabilities and efficient resource utilization.

Determining Which Web Server Is Being Used

To determine which web server is being used by a particular website, you can follow these steps:

1. Inspect the Server Response Headers

One way to identify the web server is by inspecting the server response headers. These headers contain information about the server software. You can do this using your browser’s developer tools or a command-line tool like cURL.

If you are using Google Chrome, open the Developer Tools by right-clicking on a web page and selecting “Inspect.” Go to the “Network” tab and refresh the page. Look for a request with a “200 OK” status code and click on it.

In the headers section, look for a field called “Server,” which usually indicates the web server being used.

2. Use Online Tools

There are various online tools available that can help you determine the web server being used by a website. These tools typically perform a series of tests and analyze the response to provide information about the server software.

Some popular online tools include BuiltWith (www.builtwith.com) and Wappalyzer (www.wappalyzer.com). Simply enter the website URL into these tools, and they will display detailed information about the technology stack used, including the web server.

3. Look for Server-Specific URLs

Certain web servers have default URLs or specific endpoints that reveal their identity. For example, Apache often displays its version number when accessing “/server-status” or “/server-info”. Similarly, Nginx may reveal its version in error pages or when accessing “/nginx-status”.


In conclusion, identifying which web server is being used by a specific website can be done through various methods such as inspecting response headers, using online tools, or looking for server-specific URLs. Understanding the web server being used can provide insights into its features, performance, and security capabilities.

Now that you have a better understanding of web servers and how to determine which one is being used, you can explore further and make informed decisions when it comes to web development or troubleshooting.

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