--- service: d.root-servers.net start-period: '2016-03-09T00:00:00Z' end-period: '2016-03-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4260095004 dns-udp-queries-received-ipv6: 508941477 dns-tcp-queries-received-ipv4: 30502484 dns-tcp-queries-received-ipv6: 1314479 dns-udp-responses-sent-ipv4: 4243941710 dns-udp-responses-sent-ipv6: 508644387 dns-tcp-responses-sent-ipv4: 30493359 dns-tcp-responses-sent-ipv6: 1314432