--- service: j.root-servers.net start-period: '2017-01-19T00:00:00Z' end-period: '2017-01-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6624288090 dns-udp-queries-received-ipv6: 657796741 dns-tcp-queries-received-ipv4: 177751714 dns-tcp-queries-received-ipv6: 13873999 dns-udp-responses-sent-ipv4: 6407241016 dns-udp-responses-sent-ipv6: 662178851 dns-tcp-responses-sent-ipv4: 165764141 dns-tcp-responses-sent-ipv6: 13991688