--- service: j.root-servers.net start-period: '2013-12-27T00:00:00Z' end-period: '2013-12-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2544364921 dns-udp-queries-received-ipv6: 165875048 dns-tcp-queries-received-ipv4: 23029231 dns-tcp-queries-received-ipv6: 2643238 dns-udp-responses-sent-ipv4: 2537235682 dns-udp-responses-sent-ipv6: 165825779 dns-tcp-responses-sent-ipv4: 21239301 dns-tcp-responses-sent-ipv6: 378