# Working with administrative ARNs in Amazon Neptune
<a name="tagging-arns"></a>

Resources that are created in Amazon Web Services are each uniquely identified with an Amazon Resource Name (ARN). For certain Amazon Neptune operations, you must uniquely identify a Neptune resource by specifying its ARN. 

**Important**  
Amazon Neptune shares the format of Amazon RDS ARNs for administrative actions that use the [Management API reference](api.md). Neptune administrative ARNs contain `rds` and not `neptune-db`. For data-plane ARNs that identify Neptune data resources, see [Specifying data resources](iam-data-resources.md).

**Topics**
+ [Constructing an ARN for Neptune](tagging-arns-constructing.md)
+ [Getting an existing ARN in Amazon Neptune](#tagging-arns-getting)

## Getting an existing ARN in Amazon Neptune
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You can get the ARN of a Neptune resource by using the Amazon Web Services Management Console, Amazon Command Line Interface (Amazon CLI), or Neptune API.

### Getting an existing ARN using the Amazon Web Services Management Console
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To get an ARN using the console, navigate to the resource that you want an ARN for, and view the details for that resource. For example, to get the ARN for a DB instance, choose **Instances** in the navigation panel, and choose the instance that you want from the list. The ARN is in the **Instance Details** section. 

### Getting an existing ARN using the Amazon CLI
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To use the Amazon CLI to get an ARN for a particular Neptune resource, use the `describe` command for that resource. The following table shows each Amazon CLI command and the ARN property that is used with the command to get an ARN.


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[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/en_us/neptune/latest/userguide/tagging-arns.html)

For example, the following Amazon CLI command gets the ARN for a DB instance.

**Example**  
For Linux, OS X, or Unix:  

```
1. aws neptune describe-db-instances \
2. --db-instance-identifier DBInstanceIdentifier \
3. --region us-west-2
```
For Windows:  

```
1. aws neptune describe-db-instances ^
2. --db-instance-identifier DBInstanceIdentifier ^
3. --region us-west-2
```

### Getting an existing ARN using the API
<a name="tagging-arns-api"></a>

To get an ARN for a particular Neptune resource, call the following API actions and use the ARN properties shown.


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[\[See the AWS documentation website for more details\]](http://docs.amazonaws.cn/en_us/neptune/latest/userguide/tagging-arns.html)