Splitting your IPv6 subnet Each account can order a free /48 IPv6 block. This allocation can be split into several /56 blocks. The /56 blocks can then be split into multiple /64 subnets. In your account you can create as many /56 as you have servers, and as many /64 as you have failover IPs. You can split your blocks in the configuration of the network in your account “Server” > “Network configuration”: Once you are in the network configuration, you'll have to click on the settings icon next to your /48. You will have to click on “Create subnet” then: You'll have to repeat this for each new subnet. Once your subnet is ready, read how you configure IPv6 on your server.