--- service: a.root-servers.net start-period: '2016-09-26T00:00:00Z' end-period: '2016-09-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4733221786 dns-udp-queries-received-ipv6: 430397880 dns-tcp-queries-received-ipv4: 113556556 dns-tcp-queries-received-ipv6: 5274666 dns-udp-responses-sent-ipv4: 4672774355 dns-udp-responses-sent-ipv6: 430348730 dns-tcp-responses-sent-ipv4: 115025053 dns-tcp-responses-sent-ipv6: 5329587