--- service: j.root-servers.net start-period: '2015-12-18T00:00:00Z' end-period: '2015-12-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6004834427 dns-udp-queries-received-ipv6: 426176459 dns-tcp-queries-received-ipv4: 60036560 dns-tcp-queries-received-ipv6: 1464322 dns-udp-responses-sent-ipv4: 5888754381 dns-udp-responses-sent-ipv6: 427853509 dns-tcp-responses-sent-ipv4: 53310280 dns-tcp-responses-sent-ipv6: 207388