--- service: d.root-servers.net start-period: '2016-05-19T00:00:00Z' end-period: '2016-05-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6811629169 dns-udp-queries-received-ipv6: 761631752 dns-tcp-queries-received-ipv4: 32138448 dns-tcp-queries-received-ipv6: 710014 dns-udp-responses-sent-ipv4: 6788522321 dns-udp-responses-sent-ipv6: 761317972 dns-tcp-responses-sent-ipv4: 32044664 dns-tcp-responses-sent-ipv6: 709867