--- service: a.root-servers.net start-period: '2016-03-07T00:00:00Z' end-period: '2016-03-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4333765945 dns-udp-queries-received-ipv6: 353721848 dns-tcp-queries-received-ipv4: 32020449 dns-tcp-queries-received-ipv6: 3702026 dns-udp-responses-sent-ipv4: 4321002317 dns-udp-responses-sent-ipv6: 354654019 dns-tcp-responses-sent-ipv4: 27554345 dns-tcp-responses-sent-ipv6: 328665