--- service: a.root-servers.net start-period: '2015-12-05T00:00:00Z' end-period: '2015-12-05T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3885436401 dns-udp-queries-received-ipv6: 290572223 dns-tcp-queries-received-ipv4: 41694413 dns-tcp-queries-received-ipv6: 1954504 dns-udp-responses-sent-ipv4: 3870220633 dns-udp-responses-sent-ipv6: 291806605 dns-tcp-responses-sent-ipv4: 35114994 dns-tcp-responses-sent-ipv6: 275923