On Azure, how do I find the ip address of an app service to create a firewall rule for it on Azure SQL?

I have created an Azure SQL server, setting ‘Allow Azure services and resources to access this server’ to no. I have a. ASP.Net application running as an App Service and I want to allow it to access a database on the SQL server.

From what I see here, the app service ip is static (unless deleted and re-created) so it seems like a reasonable solution at the security level required by my data.

How do I find the ip address the app service will be accessing the SQL server with so I can create a firewall rule?

Thanks!