--- service: j.root-servers.net start-period: '2014-01-04T00:00:00Z' end-period: '2014-01-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2559874258 dns-udp-queries-received-ipv6: 163062612 dns-tcp-queries-received-ipv4: 22783390 dns-tcp-queries-received-ipv6: 2543288 dns-udp-responses-sent-ipv4: 2553408648 dns-udp-responses-sent-ipv6: 163017875 dns-tcp-responses-sent-ipv4: 21124121 dns-tcp-responses-sent-ipv6: 165