--- service: a.root-servers.net start-period: '2016-03-30T00:00:00Z' end-period: '2016-03-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5945431414 dns-udp-queries-received-ipv6: 378716523 dns-tcp-queries-received-ipv4: 91420903 dns-tcp-queries-received-ipv6: 3500834 dns-udp-responses-sent-ipv4: 5913804317 dns-udp-responses-sent-ipv6: 379501050 dns-tcp-responses-sent-ipv4: 69964735 dns-tcp-responses-sent-ipv6: 272724