--- service: a.root-servers.net start-period: '2016-09-27T00:00:00Z' end-period: '2016-09-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4896297141 dns-udp-queries-received-ipv6: 445552632 dns-tcp-queries-received-ipv4: 116935986 dns-tcp-queries-received-ipv6: 5256694 dns-udp-responses-sent-ipv4: 4845290502 dns-udp-responses-sent-ipv6: 445503745 dns-tcp-responses-sent-ipv4: 118789865 dns-tcp-responses-sent-ipv6: 5318865