--- service: j.root-servers.net start-period: '2015-12-12T00:00:00Z' end-period: '2015-12-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4244786842 dns-udp-queries-received-ipv6: 536551521 dns-tcp-queries-received-ipv4: 119119809 dns-tcp-queries-received-ipv6: 2190185 dns-udp-responses-sent-ipv4: 4000443919 dns-udp-responses-sent-ipv6: 539165343 dns-tcp-responses-sent-ipv4: 109707571 dns-tcp-responses-sent-ipv6: 313154