# Understanding IPv6 support
<a name="setting-up-IPv6"></a>

All Amazon AppConfig APIs fully support IPv4 and IPv6 calls.

**Control plane APIs**

Use the following endpoint for IPv4 and IPv6 dual-stack calls to the [control plane](https://docs.amazonaws.cn/appconfig/2019-10-09/APIReference/API_Operations_Amazon_AppConfig.html):

```
appconfig.{{Region}}.api.aws
```

For example: appconfig.us-east-1.api.aws

For IPv4 only, use the following URL:

```
appconfig.{{Region}}.amazonaws.com
```

**Data plane APIs**

For dual-stack calls to the [data plane](https://docs.amazonaws.cn/appconfig/2019-10-09/APIReference/API_Operations_AWS_AppConfig_Data.html), use the following endpoint:

```
appconfigdata.{{Region}}.api.aws
```

For example: appconfig.us-east-1.api.aws

For IPv4 only, use the following URL:

```
appconfigdata.{{Region}}.amazonaws.com
```

**Note**  
For more information, see [Amazon AppConfig endpoints and quotas](https://docs.amazonaws.cn/general/latest/gr/appconfig.html) in the *Amazon Web Services General Reference*.