--- service: j.root-servers.net start-period: '2013-12-22T00:00:00Z' end-period: '2013-12-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2371342586 dns-udp-queries-received-ipv6: 152050135 dns-tcp-queries-received-ipv4: 21907817 dns-tcp-queries-received-ipv6: 2471577 dns-udp-responses-sent-ipv4: 2364458450 dns-udp-responses-sent-ipv6: 152026052 dns-tcp-responses-sent-ipv4: 20219515 dns-tcp-responses-sent-ipv6: 598