--- service: i.root-servers.net start-period: '2014-09-15T00:00:00Z' end-period: '2014-09-16T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3141360602 dns-udp-queries-received-ipv6: 223234011 dns-tcp-queries-received-ipv4: 7010566 dns-tcp-queries-received-ipv6: 263830 dns-udp-responses-sent-ipv4: 3082488255 dns-udp-responses-sent-ipv6: 224520639 dns-tcp-responses-sent-ipv4: 6797278 dns-tcp-responses-sent-ipv6: 264822