--- service: i.root-servers.net start-period: '2016-04-16T00:00:00Z' end-period: '2016-04-17T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4551802466 dns-udp-queries-received-ipv6: 414056767 dns-tcp-queries-received-ipv4: 24094847 dns-tcp-queries-received-ipv6: 828026 dns-udp-responses-sent-ipv4: 4489420759 dns-udp-responses-sent-ipv6: 413555856 dns-tcp-responses-sent-ipv4: 23866553 dns-tcp-responses-sent-ipv6: 830869