What are HTTP status code classes?

Status codes are grouped into five classes: 1xx (Informational), 2xx (Success), 3xx (Redirection), 4xx (Client Error), and 5xx (Server Error).

HTTP Status Code Lookup & Meanings

Q: How does this HTTP Status Lookup work?

Enter any 3-digit HTTP response code (e.g. 200, 404, 500) and click Lookup to view its definition and meaning.

Enter Status Code

Understanding HTTP Status Codes

HTTP status codes are standard response codes issued by web servers in response to a browser's request. They indicate whether a specific HTTP request has been successfully completed or if an error occurred during processing.

Our free HTTP Status Code Lookup reference tool helps developers and SEO specialists quickly identify server responses and troubleshoot web application issues.

Categories of HTTP Status Codes

Status codes are categorized into five distinct ranges based on their prefix:

1. 1xx (Informational)

Indicates that the request was received and the process is continuing.

2. 2xx (Successful)

Indicates that the request was successfully received, understood, and accepted (e.g., 200 OK).

3. 3xx (Redirection)

Indicates that further action needs to be taken in order to complete the request (e.g., 301 Moved Permanently).

4. 4xx (Client Error)

Indicates that the request contains bad syntax or cannot be fulfilled (e.g., 404 Not Found).

5. 5xx (Server Error)

Indicates that the server failed to fulfill a valid request due to an internal error (e.g., 500 Internal Server Error).

Features of MicroToolStack's Status Lookup

Instant Reference: Look up common web response codes and error meanings instantly.
Developer & SEO Friendly: Essential tool for auditing website errors and server headers.
Responsive Design: Clean, optimized interface for all devices.

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Frequently Asked Questions (FAQs)

How does this HTTP Status Lookup work?

Enter any 3-digit status code to retrieve its official definition and description.

What is the difference between 404 and 500 errors?

A 404 error means the requested page or resource could not be found on the server, whereas a 500 error indicates an unexpected internal server failure.

Is this tool free?

Yes, MicroToolStack's HTTP Status Code Lookup is 100% free with no registration required.