How Do I Find Out What Web Server a Site Is Using?


Larry Thompson

Have you ever wondered what web server a particular site is using? Whether you are a web developer, a cybersecurity enthusiast, or just curious about the technology behind websites, finding out the web server software being used can provide valuable insights. In this tutorial, we will explore different methods to determine the web server of a site.

Method 1: Checking HTTP Headers

One of the easiest ways to find out the web server software is by checking the HTTP response headers. These headers are sent by the server in response to your request and contain important information about the server.

To check the HTTP headers, you can use various browser developer tools. Here’s how:

  1. Open any web page of the site you want to investigate.
  2. Right-click on the page and select “Inspect” or “Inspect Element”. This will open the browser’s developer tools.
  3. Navigate to the “Network” tab in the developer tools.
  4. Refresh the page to capture all network requests made by your browser.
  5. Select any request from the list of network requests and look for a section called “Response Headers”.
    • Note: The main request for loading the webpage usually has a URL without any file extension (e.g.,
  6. In the “Response Headers” section, look for an entry called “Server”.

    This entry usually reveals information about the web server software being used. For example, it might say “Server: Apache/2.4.29 (Ubuntu)” or “Server: Microsoft-IIS/10.0”.

If you cannot find an explicit “Server” entry in the response headers, it’s possible that the web server is configured to hide this information for security reasons.

Method 2: Using Online Tools

If you prefer a more straightforward approach without diving into browser developer tools, several online tools can provide you with information about the web server software. These tools simplify the process by analyzing the HTTP response headers on your behalf.

Here are a few popular online tools you can use:

Simply enter the URL of the website you want to investigate, and these tools will retrieve and display the web server information for you.

Method 3: Manually Interpreting Server-Specific Behaviors

In some cases, certain server behaviors can give you clues about the web server software being used. Although this method might not always provide a definitive answer, it can be helpful when other methods fail.

Here are a few examples:

  • Default Pages: Some web servers have default pages that are displayed when no specific file is requested. For example, “index.html” or “default.aspx” might indicate an Apache or IIS server, respectively.
  • Error Pages: Different web servers have different default error pages.

    These pages often contain server-specific messages or branding that can help identify the web server software.

  • File Extensions: The file extensions used for server-side scripts can also provide hints. For instance, “.php” files are commonly associated with PHP and Apache servers.

While these methods might not always produce accurate results, they can assist you in making an educated guess about the web server software being used.


Identifying the web server software of a website can be useful for various purposes. By checking HTTP headers, using online tools, or interpreting server-specific behaviors, you can gather valuable information about the underlying technology powering a site. Remember that while some servers openly disclose their software, others may intentionally hide this information for security reasons.

Regardless of your motivation for finding out the web server, understanding the technology stack behind a website adds to your knowledge and helps you gain insights into how things work in the vast world of the internet.

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