--- service: i.root-servers.net start-period: '2016-05-09T00:00:00Z' end-period: '2016-05-10T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5485643542 dns-udp-queries-received-ipv6: 406134406 dns-tcp-queries-received-ipv4: 32254706 dns-tcp-queries-received-ipv6: 901208 dns-udp-responses-sent-ipv4: 5420765364 dns-udp-responses-sent-ipv6: 411304205 dns-tcp-responses-sent-ipv4: 31727116 dns-tcp-responses-sent-ipv6: 903520