--- service: i.root-servers.net start-period: '2014-12-16T00:00:00Z' end-period: '2014-12-17T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3094024747 dns-udp-queries-received-ipv6: 228695853 dns-tcp-queries-received-ipv4: 7365473 dns-tcp-queries-received-ipv6: 230700 dns-udp-responses-sent-ipv4: 3071163121 dns-udp-responses-sent-ipv6: 229912081 dns-tcp-responses-sent-ipv4: 7420691 dns-tcp-responses-sent-ipv6: 230372