IPv6 Active Webhosts Hilbert also exist based on Akamai data as I found this d3 block by Vasco Asturiano: https://bl.ocks.org/vasturiano/0c0f60cf193fa3a04b5d41

IPv6 Active Webhosts Hilbert also exist based on Akamai data as I found this d3 block by Vasco Asturiano: https://bl.ocks.org/vasturiano/0c0f60cf193fa3a04b5d414aed6f5834 https://bl.ocks.org/vasturiano/0c0f60cf193fa3a04b5d414aed6f5... The author also has some other cool d3 visualizations of IPv6 Routes, AS, as well as IPv4 allocations.