--- service: d.root-servers.net start-period: '2016-04-26T00:00:00Z' end-period: '2016-04-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4518984423 dns-udp-queries-received-ipv6: 618133780 dns-tcp-queries-received-ipv4: 37490099 dns-tcp-queries-received-ipv6: 615673 dns-udp-responses-sent-ipv4: 4502375849 dns-udp-responses-sent-ipv6: 617902310 dns-tcp-responses-sent-ipv4: 37400067 dns-tcp-responses-sent-ipv6: 615511