--- service: a.root-servers.net start-period: '2017-01-03T00:00:00Z' end-period: '2017-01-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4618164638 dns-udp-queries-received-ipv6: 488123134 dns-tcp-queries-received-ipv4: 180652367 dns-tcp-queries-received-ipv6: 8861859 dns-udp-responses-sent-ipv4: 4614832958 dns-udp-responses-sent-ipv6: 487843576 dns-tcp-responses-sent-ipv4: 181511987 dns-tcp-responses-sent-ipv6: 8919260