--- service: i.root-servers.net start-period: '2016-05-28T00:00:00Z' end-period: '2016-05-29T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6030444238 dns-udp-queries-received-ipv6: 435711691 dns-tcp-queries-received-ipv4: 24152990 dns-tcp-queries-received-ipv6: 729700 dns-udp-responses-sent-ipv4: 5988241144 dns-udp-responses-sent-ipv6: 444056431 dns-tcp-responses-sent-ipv4: 24264894 dns-tcp-responses-sent-ipv6: 734656