--- service: j.root-servers.net start-period: '2015-06-19T00:00:00Z' end-period: '2015-06-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3239032744 dns-udp-queries-received-ipv6: 247123662 dns-tcp-queries-received-ipv4: 28309817 dns-tcp-queries-received-ipv6: 17738450 dns-udp-responses-sent-ipv4: 3166861598 dns-udp-responses-sent-ipv6: 247009823 dns-tcp-responses-sent-ipv4: 27567795 dns-tcp-responses-sent-ipv6: 16617708