--- service: i.root-servers.net start-period: '2014-03-13T00:00:00Z' end-period: '2014-03-14T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2698229365 dns-udp-queries-received-ipv6: 178817219 dns-tcp-queries-received-ipv4: 5650396 dns-tcp-queries-received-ipv6: 307687 dns-udp-responses-sent-ipv4: 2639684342 dns-udp-responses-sent-ipv6: 178949103 dns-tcp-responses-sent-ipv4: 5665674 dns-tcp-responses-sent-ipv6: 311493