--- service: a.root-servers.net start-period: '2016-09-01T00:00:00Z' end-period: '2016-09-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4527346416 dns-udp-queries-received-ipv6: 467202620 dns-tcp-queries-received-ipv4: 121158400 dns-tcp-queries-received-ipv6: 6127578 dns-udp-responses-sent-ipv4: 4514916882 dns-udp-responses-sent-ipv6: 467102096 dns-tcp-responses-sent-ipv4: 120144913 dns-tcp-responses-sent-ipv6: 4394186