--- service: j.root-servers.net start-period: '2014-01-25T00:00:00Z' end-period: '2014-01-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2543514966 dns-udp-queries-received-ipv6: 192259152 dns-tcp-queries-received-ipv4: 26776411 dns-tcp-queries-received-ipv6: 4090582 dns-udp-responses-sent-ipv4: 2531788413 dns-udp-responses-sent-ipv6: 192267145 dns-tcp-responses-sent-ipv4: 23025530 dns-tcp-responses-sent-ipv6: 220