--- service: d.root-servers.net start-period: '2016-05-20T00:00:00Z' end-period: '2016-05-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6842962862 dns-udp-queries-received-ipv6: 752182393 dns-tcp-queries-received-ipv4: 34499025 dns-tcp-queries-received-ipv6: 688802 dns-udp-responses-sent-ipv4: 6825367289 dns-udp-responses-sent-ipv6: 751920724 dns-tcp-responses-sent-ipv4: 34390241 dns-tcp-responses-sent-ipv6: 688721