--- service: j.root-servers.net start-period: '2015-12-19T00:00:00Z' end-period: '2015-12-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2959626241 dns-udp-queries-received-ipv6: 413947865 dns-tcp-queries-received-ipv4: 56531570 dns-tcp-queries-received-ipv6: 1284280 dns-udp-responses-sent-ipv4: 2883755277 dns-udp-responses-sent-ipv6: 416163341 dns-tcp-responses-sent-ipv4: 51806205 dns-tcp-responses-sent-ipv6: 203994