# Creating a CIDR collection with CIDR locations and blocks
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To get started, create a CIDR collection and add CIDR blocks and locations to it.<a name="CIDR-collection-creating-procedure"></a>

**To create a CIDR collection using the Route 53 console**

1. Sign in to the AWS Management Console and open the Route 53 console at [https://console.aws.amazon.com/route53/](https://console.aws.amazon.com/route53/).

1. In the navigation pane, choose **IP-based routing**, and then **CIDR collections**.

1. Select **Create CIDR collection**.

1. In the **Create CIDR collection** pane, under **Details**, enter a name for the collection.

1. Choose **Create collection** to create an empty collection.

   - or -

   In the **Create CIDR locations** section, enter a name for the CIDR location in the **CIDR location** box. The location name can be any identifying string, for example **company 1**, or **Seattle**. It doesn't have to be an actual geographic location.
**Important**  
The CIDR location name has a maximum length of 16 characters.

   Enter the CIDR blocks in the **CIDR blocks** box one per line. These can be IPv4 or IPv6 addresses ranging from /0 to /24 for IPv4 and /0 to /48 for IPv6.

1. After you have entered the CIDR blocks, choose **Create CIDR collection**, or **Add another location** to keep entering locations and CIDR block. You can enter multiple CIDR locations per collection.

1. After you have entered CIDR locations, choose **Create CIDR collection**.