--- service: a.root-servers.net start-period: '2015-09-05T00:00:00Z' end-period: '2015-09-05T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4399191799 dns-udp-queries-received-ipv6: 257158165 dns-tcp-queries-received-ipv4: 17178736 dns-tcp-queries-received-ipv6: 9689797 dns-udp-responses-sent-ipv4: 4424104814 dns-udp-responses-sent-ipv6: 259484427 dns-tcp-responses-sent-ipv4: 14805402 dns-tcp-responses-sent-ipv6: 8241988