--- service: a.root-servers.net start-period: '2016-03-29T00:00:00Z' end-period: '2016-03-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6057004186 dns-udp-queries-received-ipv6: 365536359 dns-tcp-queries-received-ipv4: 127654960 dns-tcp-queries-received-ipv6: 3332030 dns-udp-responses-sent-ipv4: 6030588144 dns-udp-responses-sent-ipv6: 366253193 dns-tcp-responses-sent-ipv4: 89824163 dns-tcp-responses-sent-ipv6: 278964