--- service: j.root-servers.net start-period: '2015-12-17T00:00:00Z' end-period: '2015-12-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4225853615 dns-udp-queries-received-ipv6: 484758042 dns-tcp-queries-received-ipv4: 73588752 dns-tcp-queries-received-ipv6: 1792775 dns-udp-responses-sent-ipv4: 4142956704 dns-udp-responses-sent-ipv6: 488522307 dns-tcp-responses-sent-ipv4: 65895576 dns-tcp-responses-sent-ipv6: 241262