--- service: j.root-servers.net start-period: '2016-02-21T00:00:00Z' end-period: '2016-02-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5210427213 dns-udp-queries-received-ipv6: 577036428 dns-tcp-queries-received-ipv4: 113578460 dns-tcp-queries-received-ipv6: 2617662 dns-udp-responses-sent-ipv4: 4729728171 dns-udp-responses-sent-ipv6: 576575520 dns-tcp-responses-sent-ipv4: 100060965 dns-tcp-responses-sent-ipv6: 322484