--- service: a.root-servers.net start-period: '2014-01-04T00:00:00Z' end-period: '2014-01-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1292820708 dns-udp-queries-received-ipv6: 47085586 dns-tcp-queries-received-ipv4: 6691729 dns-tcp-queries-received-ipv6: 674045 dns-udp-responses-sent-ipv4: 1292330404 dns-udp-responses-sent-ipv6: 47092723 dns-tcp-responses-sent-ipv4: 6936470 dns-tcp-responses-sent-ipv6: 49