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Copy file name to clipboardExpand all lines: articles/azure-functions/ip-addresses.md
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@@ -3,17 +3,17 @@ title: IP addresses in Azure Functions
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description: Learn how to find inbound and outbound IP addresses for function apps, and what causes them to change.
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ms.topic: conceptual
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ms.date: 05/05/2025
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ms.date: 05/06/2025
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---
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# IP addresses in Azure Functions
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This article explains the following concepts related to IP addresses of function apps:
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* Locating the IP addresses currently in use by a function app.
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* Conditions that cause function app IP addresses to change.
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* Restricting the IP addresses that can access a function app.
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* Defining dedicated IP addresses for a function app.
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- Locating the IP addresses currently in use by a function app.
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- Conditions that cause function app IP addresses to change.
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- Restricting the IP addresses that can access a function app.
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- Defining dedicated IP addresses for a function app.
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IP addresses are associated with function apps, not with individual functions. Incoming HTTP requests can't use the inbound IP address to call individual functions; they must use the default domain name (functionappname.azurewebsites.net) or a custom domain name.
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# [Azure portal](#tab/portal)
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1. Sign in to the [Azure Resource Explorer](https://resources.azure.com).
1. In the JSON panel, find the site with an `id` property that ends in the name of your function app.
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1. See `outboundIpAddresses` and `possibleOutboundIpAddresses`.
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When a function app runs on Dedicated (App Service) plans, the set of available outbound IP addresses for a function app might change when you:
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* Take any action that can change the inbound IP address.
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* Change your Dedicated (App Service) plan pricing tier. The list of all possible outbound IP addresses your app can use, for all pricing tiers, is in the `possibleOutboundIPAddresses` property. See [Find outbound IPs](#find-outbound-ip-addresses).
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- Take any action that can change the inbound IP address.
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- Change your Dedicated (App Service) plan pricing tier. The list of all possible outbound IP addresses your app can use, for all pricing tiers, is in the `possibleOutboundIPAddresses` property. See [Find outbound IPs](#find-outbound-ip-addresses).
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