Understanding the True-Client-IP Header
Enabling the True-Client-IP Header adds the True-Client-IP header to all requests to your origin server, which includes the end user's IP address.
| Free | Pro | Business | Enterprise | |
|---|---|---|---|---|
Availability  |  No  |  No  |  No  |  Yes  |   
The recommended procedure to access client IP information is to enable the Add "True-Client-IP" header Managed Transform.
For additional guidance on using True-Client-IP Header with Cloudflare, refer to the following resources: