--- service: a.root-servers.net start-period: '2016-04-07T00:00:00Z' end-period: '2016-04-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4814702146 dns-udp-queries-received-ipv6: 338513321 dns-tcp-queries-received-ipv4: 44901108 dns-tcp-queries-received-ipv6: 3354788 dns-udp-responses-sent-ipv4: 4784592488 dns-udp-responses-sent-ipv6: 339211778 dns-tcp-responses-sent-ipv4: 33965568 dns-tcp-responses-sent-ipv6: 267805