--- service: a.root-servers.net start-period: '2015-05-24T00:00:00Z' end-period: '2015-05-24T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2575052008 dns-udp-queries-received-ipv6: 199589124 dns-tcp-queries-received-ipv4: 16897788 dns-tcp-queries-received-ipv6: 2808950 dns-udp-responses-sent-ipv4: 2605037466 dns-udp-responses-sent-ipv6: 202316150 dns-tcp-responses-sent-ipv4: 14838581 dns-tcp-responses-sent-ipv6: 1651704