--- service: a.root-servers.net start-period: '2017-01-26T00:00:00Z' end-period: '2017-01-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4670258110 dns-udp-queries-received-ipv6: 495093237 dns-tcp-queries-received-ipv4: 139796177 dns-tcp-queries-received-ipv6: 8721949 dns-udp-responses-sent-ipv4: 4660652977 dns-udp-responses-sent-ipv6: 494940124 dns-tcp-responses-sent-ipv4: 139592715 dns-tcp-responses-sent-ipv6: 8681477