Consider Eliminating Spend on IPv4 Addresses

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Source for automated Recommendations: Spend data in the CloudZero platform. Frequency: Checked once per day. If the Recommendation is marked as Ignored, it will still be updated, but notifications will no longer be sent for any updates.

This Recommendation is created when there is spend on IPv4 addresses, indicating there is an opportunity to reduce costs.

Threshold: This Recommendation is created if the total spend on IPv4 addresses is greater than $500.

AWS is now charging for the use of IPv4 addresses in order to discourage the use of public IPs. This charge applies to all public IPv4 addresses, whether or not they are attached to a service, as well as ro Elastic IP addresses (IPv4) assigned to resources within a VPC, AWS Global Accelerator, and AWS Site-to-Site VPN tunnel.

To reduce your costs, you can reduce use of IPv4 addresses using the following methods. Learn more about how to optimize public IPv4 address usage on AWS in the AWS documentation.

Use IPv6 instead of IPv4.
Deactivate idle public IPv4 addresses when possible.
Deploy most applications within private subnets to avoid unnecessary public IP assignments.
For inbound internet traffic, use Elastic Load Balancers or AWS Global Accelerator to distribute traffic across multiple instances with a single public IP address, improving scalability and IP efficiency.
For outbound internet traffic, use NAT gateways to translate private IP addresses to a limited set of public IPs for outbound internet access.

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There is no charge for using your own IPv4 addresses. You can bring part or all of your publicly routable IPv4 address range from your on-premises network to your AWS account.
Not all applications are immediately ready for IPv6, so ensure the application is compatible.
You can delete network interfaces that you no longer need. However, you cannot delete a network interface that is in use; you must detach it first.
Learn more about planning for IPv6 adoption in the AWS documentation.

The resource table shows the list of IPv4 addresses and their cost over the last 30 days.