--- service: a.root-servers.net start-period: '2015-08-14T00:00:00Z' end-period: '2015-08-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3605467287 dns-udp-queries-received-ipv6: 192106682 dns-tcp-queries-received-ipv4: 18828792 dns-tcp-queries-received-ipv6: 8788365 dns-udp-responses-sent-ipv4: 3867406363 dns-udp-responses-sent-ipv6: 199163246 dns-tcp-responses-sent-ipv4: 15597399 dns-tcp-responses-sent-ipv6: 7455144