--- service: j.root-servers.net start-period: '2013-12-17T00:00:00Z' end-period: '2013-12-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2610308457 dns-udp-queries-received-ipv6: 137888480 dns-tcp-queries-received-ipv4: 23572647 dns-tcp-queries-received-ipv6: 4225762 dns-udp-responses-sent-ipv4: 2603040217 dns-udp-responses-sent-ipv6: 137812031 dns-tcp-responses-sent-ipv4: 22008860 dns-tcp-responses-sent-ipv6: 1245