--- service: d.root-servers.net start-period: '2016-02-07T00:00:00Z' end-period: '2016-02-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4054263705 dns-udp-queries-received-ipv6: 403713626 dns-tcp-queries-received-ipv4: 17653564 dns-tcp-queries-received-ipv6: 537637 dns-udp-responses-sent-ipv4: 4044858721 dns-udp-responses-sent-ipv6: 403578077 dns-tcp-responses-sent-ipv4: 17644575 dns-tcp-responses-sent-ipv6: 537329