--- service: i.root-servers.net start-period: '2014-03-31T00:00:00Z' end-period: '2014-03-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2953172805 dns-udp-queries-received-ipv6: 185977796 dns-tcp-queries-received-ipv4: 6431204 dns-tcp-queries-received-ipv6: 300736 dns-udp-responses-sent-ipv4: 2890641306 dns-udp-responses-sent-ipv6: 186484598 dns-tcp-responses-sent-ipv4: 6351756 dns-tcp-responses-sent-ipv6: 301597