--- service: a.root-servers.net start-period: '2014-04-09T00:00:00Z' end-period: '2014-04-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2465685572 dns-udp-queries-received-ipv6: 90926882 dns-tcp-queries-received-ipv4: 12052184 dns-tcp-queries-received-ipv6: 931838 dns-udp-responses-sent-ipv4: 2465109399 dns-udp-responses-sent-ipv6: 90909141 dns-tcp-responses-sent-ipv4: 12072347 dns-tcp-responses-sent-ipv6: 126