--- service: a.root-servers.net start-period: '2015-10-25T00:00:00Z' end-period: '2015-10-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2639608561 dns-udp-queries-received-ipv6: 277763829 dns-tcp-queries-received-ipv4: 18733267 dns-tcp-queries-received-ipv6: 5001658 dns-udp-responses-sent-ipv4: 2644918792 dns-udp-responses-sent-ipv6: 276794345 dns-tcp-responses-sent-ipv4: 16325171 dns-tcp-responses-sent-ipv6: 2500824