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If you received a notification that the inbound IP address of your Azure App Service app is changing, follow the instructions in this article.
Option 1: If your App Service app does not have a Custom Domain, no action is required.
Option 2: If only a CNAME record (DNS record pointing to a URI) is configured in your Domain Registration Portal (third party DNS Provider or Azure DNS), no action is required.
Option 3: If an A record (DNS record pointing directly to your IP address) is configured in your Domain Registration Portal (third party DNS Provider or Azure DNS), replace the existing IP address with the new one. You can find the new IP address by following the instructions in the next section.
Option 4: If your application is behind a load balancer, IP Filter, or any other IP mechanism that requires your app's IP address, replace the existing IP address with the new one. You can find the new IP address by following the instructions in the next section.
The new inbound IP address that is being given to your app is in the portal in the Virtual IP address field. Both this new IP address and the old one are connected to your app now, and later the old one will be disconnected.
Open the Azure portal.
In the left-hand navigation menu, select App Services.
Select your App Service app from the list.
If the app is a function app, see Function app inbound IP address.
Under the Settings header, click Properties in the left navigation, and find the section labeled Virtual IP address.
Copy the IP address and reconfigure your domain record or IP mechanism.
This article explained how to prepare for an IP address change that was initiated by Azure. For more information about IP addresses in Azure App Service, see Inbound and outbound IP addresses in Azure App Service.
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