If you have ever wondered how to find the outgoing IP address of your Web App, Mobile App, API App or Logic App, look no further.
To see how to find the OUTBOUND IP ADDRESSES from the Azure portal, view Video 1.
Video 1, find outgoing, outbound IP addresses from the portal
You can also capture them from the Azure Resource Explorer here, then navigate to the information as discussed in Video 2.
Video 2, find outgoing, outbound IP addresses using the Azure Resource Explorer