--- service: a.root-servers.net start-period: '2013-10-19T00:00:00Z' end-period: '2013-10-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1279582117 dns-udp-queries-received-ipv6: 84984578 dns-tcp-queries-received-ipv4: 6450893 dns-tcp-queries-received-ipv6: 1485362 dns-udp-responses-sent-ipv4: 1278442172 dns-udp-responses-sent-ipv6: 84994974 dns-tcp-responses-sent-ipv4: 7002149 dns-tcp-responses-sent-ipv6: 17429