--- service: a.root-servers.net start-period: '2016-07-01T00:00:00Z' end-period: '2016-07-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4404518654 dns-udp-queries-received-ipv6: 430746141 dns-tcp-queries-received-ipv4: 70835584 dns-tcp-queries-received-ipv6: 6355290 dns-udp-responses-sent-ipv4: 4404151415 dns-udp-responses-sent-ipv6: 430773565 dns-tcp-responses-sent-ipv4: 58453162 dns-tcp-responses-sent-ipv6: 321699