--- service: j.root-servers.net start-period: '2013-12-07T00:00:00Z' end-period: '2013-12-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2180607640 dns-udp-queries-received-ipv6: 139051336 dns-tcp-queries-received-ipv4: 22287953 dns-tcp-queries-received-ipv6: 3971797 dns-udp-responses-sent-ipv4: 2174059880 dns-udp-responses-sent-ipv6: 138981814 dns-tcp-responses-sent-ipv4: 20754375 dns-tcp-responses-sent-ipv6: 124