--- service: a.root-servers.net start-period: '2016-01-14T00:00:00Z' end-period: '2016-01-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4426731098 dns-udp-queries-received-ipv6: 323025051 dns-tcp-queries-received-ipv4: 29632369 dns-tcp-queries-received-ipv6: 2138175 dns-udp-responses-sent-ipv4: 4426095609 dns-udp-responses-sent-ipv6: 323359656 dns-tcp-responses-sent-ipv4: 25571557 dns-tcp-responses-sent-ipv6: 286325