A DigitalOcean Reserved IP address is a publicly-accessible static IP address that you can assign to a Droplet and then reassign to another Droplet later, as needed. You can implement a failover mechanism with reserved IPs to build a high availability infrastructure.
Deleting a reserved IP unassigns it and permanently removes it from your account.
To delete a reserved IP from the control panel, click Networking in the main navigation, then click the Reserved IPs tab. Open the More menu of the reserved IP you want to delete, then click Delete.
In the confirmation window, click Delete Reserved IP to perform the deletion.