--- service: j.root-servers.net start-period: '2014-01-20T00:00:00Z' end-period: '2014-01-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3026788274 dns-udp-queries-received-ipv6: 207151789 dns-tcp-queries-received-ipv4: 25635856 dns-tcp-queries-received-ipv6: 4260607 dns-udp-responses-sent-ipv4: 3015124542 dns-udp-responses-sent-ipv6: 207046785 dns-tcp-responses-sent-ipv4: 23878627 dns-tcp-responses-sent-ipv6: 234