--- service: a.root-servers.net start-period: '2015-01-10T00:00:00Z' end-period: '2015-01-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2664859039 dns-udp-queries-received-ipv6: 190497698 dns-tcp-queries-received-ipv4: 14579058 dns-tcp-queries-received-ipv6: 2299489 dns-udp-responses-sent-ipv4: 2664398830 dns-udp-responses-sent-ipv6: 190430163 dns-tcp-responses-sent-ipv4: 13402713 dns-tcp-responses-sent-ipv6: 1575397