Droplets do not have dedicated IP addresses, only leased ones

When creating a new Droplet, we lease it a static IP address from an available pool. This address remains associated with the Droplet until a user chooses totheir Droplet, in which case the address returns to the available pool

However, in addition to the Droplet’s static IP, you can have one Reserved IP address and up to 16 IPv6 addresses, depending on which datacenter the Droplet resides in.