--- service: j.root-servers.net start-period: '2016-04-21T00:00:00Z' end-period: '2016-04-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6080741265 dns-udp-queries-received-ipv6: 598459755 dns-tcp-queries-received-ipv4: 211907310 dns-tcp-queries-received-ipv6: 3398993 dns-udp-responses-sent-ipv4: 5777482546 dns-udp-responses-sent-ipv6: 598123366 dns-tcp-responses-sent-ipv4: 178722791 dns-tcp-responses-sent-ipv6: 385859