--- service: j.root-servers.net start-period: '2015-06-17T00:00:00Z' end-period: '2015-06-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3200367162 dns-udp-queries-received-ipv6: 254661552 dns-tcp-queries-received-ipv4: 27869948 dns-tcp-queries-received-ipv6: 15159154 dns-udp-responses-sent-ipv4: 3133017364 dns-udp-responses-sent-ipv6: 254530928 dns-tcp-responses-sent-ipv4: 27001654 dns-tcp-responses-sent-ipv6: 14028511