| Code | Description | Example |
|---|---|---|
| 100 - 199 | Informational codes indicated a request has been made and is being processed | |
| 200 - 299 | Used to signal a success | HTTP/1.1 200 OK |
| 300 - 399 | Indicates the resource has been moved | 301 Resource moved |
| 400 - 499 | Indicates cleint error. Improper request | 404 Error - Resource not found |
| 500 - 599 | Usually indicates a server error in processing the request | 500 - Server Error |