--- service: a.root-servers.net start-period: '2016-09-07T00:00:00Z' end-period: '2016-09-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4901482194 dns-udp-queries-received-ipv6: 497154472 dns-tcp-queries-received-ipv4: 112910185 dns-tcp-queries-received-ipv6: 6033567 dns-udp-responses-sent-ipv4: 4895559811 dns-udp-responses-sent-ipv6: 497081588 dns-tcp-responses-sent-ipv4: 113222698 dns-tcp-responses-sent-ipv6: 4395560