--- service: j.root-servers.net start-period: '2013-12-26T00:00:00Z' end-period: '2013-12-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2645607417 dns-udp-queries-received-ipv6: 158360162 dns-tcp-queries-received-ipv4: 22992296 dns-tcp-queries-received-ipv6: 2565350 dns-udp-responses-sent-ipv4: 2640320082 dns-udp-responses-sent-ipv6: 158325162 dns-tcp-responses-sent-ipv4: 21559992 dns-tcp-responses-sent-ipv6: 361