--- service: j.root-servers.net start-period: '2015-07-30T00:00:00Z' end-period: '2015-07-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4386844914 dns-udp-queries-received-ipv6: 295266761 dns-tcp-queries-received-ipv4: 40230622 dns-tcp-queries-received-ipv6: 19973588 dns-udp-responses-sent-ipv4: 3288205029 dns-udp-responses-sent-ipv6: 296219147 dns-tcp-responses-sent-ipv4: 39703846 dns-tcp-responses-sent-ipv6: 23045641