--- service: a.root-servers.net start-period: '2016-05-04T00:00:00Z' end-period: '2016-05-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5053615746 dns-udp-queries-received-ipv6: 349324529 dns-tcp-queries-received-ipv4: 74395846 dns-tcp-queries-received-ipv6: 4739745 dns-udp-responses-sent-ipv4: 5052416189 dns-udp-responses-sent-ipv6: 348935186 dns-tcp-responses-sent-ipv4: 63325255 dns-tcp-responses-sent-ipv6: 307792