--- service: i.root-servers.net start-period: '2014-01-16T00:00:00Z' end-period: '2014-01-17T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2582483848 dns-udp-queries-received-ipv6: 154707096 dns-tcp-queries-received-ipv4: 5455571 dns-tcp-queries-received-ipv6: 277377 dns-udp-responses-sent-ipv4: 2525034474 dns-udp-responses-sent-ipv6: 154828284 dns-tcp-responses-sent-ipv4: 5473506 dns-tcp-responses-sent-ipv6: 282112