Check if you are using a transparent proxy. This service analyzes your HTTP header request and your IP address to determine if you are using a proxy. Anonymous and private proxies are known to remove all their traces from the HTTP header request, so it would be difficult to detect them only by checking the HTTP header fields.
NO PROXY DETECTED
| HTTP_X_FORWARDED_FOR | EMPTY |
| HTTP_X_FORWARDED | EMPTY |
| HTTP_FORWARDED_FOR | EMPTY |
| HTTP_CLIENT_IP | EMPTY |
| HTTP_VIA | EMPTY |
| HTTP_PROXY_CONNECTION | EMPTY |
| FORWARDED | EMPTY |
| HTTP_FORWARDED_FOR_IP | EMPTY |
| X-PROXY-ID | EMPTY |
| MT-PROXY-ID | EMPTY |
| X-FORWARDED-FOR | EMPTY |
| FORWARDED-FOR-IP | EMPTY |
| VIA | EMPTY |
| HTTP-VIA | EMPTY |
| HTTP_COMING_FROM | EMPTY |
| HTTP_FORWARDED | EMPTY |
| HTTP_X_COMING_FROM | EMPTY |