I want list of IPs from which health check calls are getting made on the Sandbox App gateway

@Mayank Jain , Based on my understanding, I assume that you are referring to Application Gateway health monitoring for monitoring the health of all resources in the backend pool. (Please correct me if my understanding is incorrect). In this scenario, the source IP address that Application Gateway uses for health probes depend on the backend pool:

• If the server address in the backend pool is a public endpoint, then the source address is the application gateway's frontend public IP address.
• If the server address in the backend pool is a private endpoint, then the source IP address is from the application gateway subnet's private IP address space.

Hope this helps.

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