--- service: a.root-servers.net start-period: '2015-10-14T00:00:00Z' end-period: '2015-10-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3548029619 dns-udp-queries-received-ipv6: 4575106 dns-tcp-queries-received-ipv4: 21013947 dns-tcp-queries-received-ipv6: 3882848 dns-udp-responses-sent-ipv4: 3547878203 dns-udp-responses-sent-ipv6: 4633684 dns-tcp-responses-sent-ipv4: 18586547 dns-tcp-responses-sent-ipv6: 3945139