--- service: a.root-servers.net start-period: '2016-01-22T00:00:00Z' end-period: '2016-01-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4289787890 dns-udp-queries-received-ipv6: 264623667 dns-tcp-queries-received-ipv4: 50998107 dns-tcp-queries-received-ipv6: 2042302 dns-udp-responses-sent-ipv4: 4379356531 dns-udp-responses-sent-ipv6: 321386913 dns-tcp-responses-sent-ipv4: 43909782 dns-tcp-responses-sent-ipv6: 286892