--- service: j.root-servers.net start-period: '2013-12-16T00:00:00Z' end-period: '2013-12-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2589236306 dns-udp-queries-received-ipv6: 144600119 dns-tcp-queries-received-ipv4: 23603787 dns-tcp-queries-received-ipv6: 4223975 dns-udp-responses-sent-ipv4: 2581982676 dns-udp-responses-sent-ipv6: 144495860 dns-tcp-responses-sent-ipv4: 22053376 dns-tcp-responses-sent-ipv6: 572