Reserved IP Support

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.

You cannot convert a Droplet IP address into a Reserved IP.
Reserved IPs do not support SMTP traffic.
You cannot retain a Droplet’s IPv4 when you transfer the Droplet to a new region. Use a reserved IP address to maintain a static IP address.
You cannot create Droplets with a specific IP address, but you can use reserved IPs for a static address that you can migrate between Droplets.
Droplets do not have a dedicated IP address, but you can create a Reserved IP, which is a reassignable static IP address.