--- service: a.root-servers.net start-period: '2016-09-22T00:00:00Z' end-period: '2016-09-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4581182427 dns-udp-queries-received-ipv6: 432383419 dns-tcp-queries-received-ipv4: 110233812 dns-tcp-queries-received-ipv6: 5904076 dns-udp-responses-sent-ipv4: 4573167668 dns-udp-responses-sent-ipv6: 432326548 dns-tcp-responses-sent-ipv4: 111883093 dns-tcp-responses-sent-ipv6: 4875763