--- service: d.root-servers.net start-period: '2016-05-12T00:00:00Z' end-period: '2016-05-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4149603282 dns-udp-queries-received-ipv6: 652211305 dns-tcp-queries-received-ipv4: 33978299 dns-tcp-queries-received-ipv6: 658404 dns-udp-responses-sent-ipv4: 4132981367 dns-udp-responses-sent-ipv6: 651944284 dns-tcp-responses-sent-ipv4: 33831489 dns-tcp-responses-sent-ipv6: 658048