--- service: i.root-servers.net start-period: '2015-08-02T00:00:00Z' end-period: '2015-08-03T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4736864322 dns-udp-queries-received-ipv6: 252633626 dns-tcp-queries-received-ipv4: 12750690 dns-tcp-queries-received-ipv6: 261919 dns-udp-responses-sent-ipv4: 4694173519 dns-udp-responses-sent-ipv6: 254674684 dns-tcp-responses-sent-ipv4: 12641359 dns-tcp-responses-sent-ipv6: 270539