--- service: j.root-servers.net start-period: '2015-01-30T00:00:00Z' end-period: '2015-01-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3122150239 dns-udp-queries-received-ipv6: 271658430 dns-tcp-queries-received-ipv4: 26507725 dns-tcp-queries-received-ipv6: 4273482 dns-udp-responses-sent-ipv4: 3121510449 dns-udp-responses-sent-ipv6: 271379625 dns-tcp-responses-sent-ipv4: 26564732 dns-tcp-responses-sent-ipv6: 3969447