--- service: j.root-servers.net start-period: '2015-01-15T00:00:00Z' end-period: '2015-01-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3457130692 dns-udp-queries-received-ipv6: 253243606 dns-tcp-queries-received-ipv4: 29909042 dns-tcp-queries-received-ipv6: 5803401 dns-udp-responses-sent-ipv4: 3452653588 dns-udp-responses-sent-ipv6: 253228474 dns-tcp-responses-sent-ipv4: 30002825 dns-tcp-responses-sent-ipv6: 4851447