--- service: j.root-servers.net start-period: '2015-01-28T00:00:00Z' end-period: '2015-01-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3084992411 dns-udp-queries-received-ipv6: 282749946 dns-tcp-queries-received-ipv4: 27639746 dns-tcp-queries-received-ipv6: 4358606 dns-udp-responses-sent-ipv4: 3088826096 dns-udp-responses-sent-ipv6: 282681352 dns-tcp-responses-sent-ipv4: 27534415 dns-tcp-responses-sent-ipv6: 3546032