--- service: a.root-servers.net start-period: '2016-05-17T00:00:00Z' end-period: '2016-05-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8224045473 dns-udp-queries-received-ipv6: 593631735 dns-tcp-queries-received-ipv4: 89074169 dns-tcp-queries-received-ipv6: 5097850 dns-udp-responses-sent-ipv4: 8223105044 dns-udp-responses-sent-ipv6: 593203355 dns-tcp-responses-sent-ipv4: 75931498 dns-tcp-responses-sent-ipv6: 318537