“Each #RIPE_Atlas probe has at least one #DNS resolver, indicated by a DHCP reply on the local network of the probe. Irrespective of the IP address of the resolver, this server may have IPv4 and #IPv6 connectivity or only IPv4 connectivity. What is the percentage of IPv6-enabled resolvers among RIPE Atlas probes?”
▻https://labs.ripe.net/Members/stephane_bortzmeyer/how-many-ripe-atlas-probes-can-resolve-ipv6-only-domain-names