--- service: j.root-servers.net start-period: '2015-06-29T00:00:00Z' end-period: '2015-06-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3011414145 dns-udp-queries-received-ipv6: 253259728 dns-tcp-queries-received-ipv4: 29645662 dns-tcp-queries-received-ipv6: 18218162 dns-udp-responses-sent-ipv4: 2956100989 dns-udp-responses-sent-ipv6: 253090474 dns-tcp-responses-sent-ipv4: 28924914 dns-tcp-responses-sent-ipv6: 16408050