--- service: i.root-servers.net start-period: '2016-02-16T00:00:00Z' end-period: '2016-02-17T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4859460813 dns-udp-queries-received-ipv6: 405449558 dns-tcp-queries-received-ipv4: 16069137 dns-tcp-queries-received-ipv6: 935641 dns-udp-responses-sent-ipv4: 4831053507 dns-udp-responses-sent-ipv6: 407266425 dns-tcp-responses-sent-ipv4: 16050848 dns-tcp-responses-sent-ipv6: 939503