--- service: j.root-servers.net start-period: '2015-06-12T00:00:00Z' end-period: '2015-06-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3117343959 dns-udp-queries-received-ipv6: 225994341 dns-tcp-queries-received-ipv4: 29306852 dns-tcp-queries-received-ipv6: 21111363 dns-udp-responses-sent-ipv4: 3052452083 dns-udp-responses-sent-ipv6: 225908943 dns-tcp-responses-sent-ipv4: 28643278 dns-tcp-responses-sent-ipv6: 20133625