--- service: i.root-servers.net start-period: '2013-07-06T00:00:00Z' end-period: '2013-07-07T00:02:24Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1805246854 dns-udp-queries-received-ipv6: 119497199 dns-tcp-queries-received-ipv4: 2606398 dns-tcp-queries-received-ipv6: 144518 dns-udp-responses-sent-ipv4: 1810430910 dns-udp-responses-sent-ipv6: 126319281 dns-tcp-responses-sent-ipv4: 2813137 dns-tcp-responses-sent-ipv6: 147186