--- service: a.root-servers.net start-period: '2016-09-11T00:00:00Z' end-period: '2016-09-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4097728316 dns-udp-queries-received-ipv6: 455773814 dns-tcp-queries-received-ipv4: 99169668 dns-tcp-queries-received-ipv6: 5514236 dns-udp-responses-sent-ipv4: 4092383202 dns-udp-responses-sent-ipv6: 455676699 dns-tcp-responses-sent-ipv4: 92860634 dns-tcp-responses-sent-ipv6: 4143144