--- service: d.root-servers.net start-period: '2016-02-17T00:00:00Z' end-period: '2016-02-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4434711492 dns-udp-queries-received-ipv6: 442419183 dns-tcp-queries-received-ipv4: 26983235 dns-tcp-queries-received-ipv6: 1117217 dns-udp-responses-sent-ipv4: 4417584547 dns-udp-responses-sent-ipv6: 442141077 dns-tcp-responses-sent-ipv4: 26951258 dns-tcp-responses-sent-ipv6: 1117189