--- service: i.root-servers.net start-period: '2013-08-03T00:00:00Z' end-period: '2013-08-04T00:03:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1924466758 dns-udp-queries-received-ipv6: 131961816 dns-tcp-queries-received-ipv4: 4536606 dns-tcp-queries-received-ipv6: 221995 dns-udp-responses-sent-ipv4: 1869892830 dns-udp-responses-sent-ipv6: 131936110 dns-tcp-responses-sent-ipv4: 4378725 dns-tcp-responses-sent-ipv6: 206868