--- service: i.root-servers.net start-period: '2014-01-23T00:00:00Z' end-period: '2014-01-24T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2539322552 dns-udp-queries-received-ipv6: 157244601 dns-tcp-queries-received-ipv4: 5349373 dns-tcp-queries-received-ipv6: 262470 dns-udp-responses-sent-ipv4: 2483690030 dns-udp-responses-sent-ipv6: 157357744 dns-tcp-responses-sent-ipv4: 5357841 dns-tcp-responses-sent-ipv6: 265749