--- service: a.root-servers.net start-period: '2015-02-02T00:00:00Z' end-period: '2015-02-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2821567972 dns-udp-queries-received-ipv6: 195720756 dns-tcp-queries-received-ipv4: 16137596 dns-tcp-queries-received-ipv6: 2182041 dns-udp-responses-sent-ipv4: 2819040337 dns-udp-responses-sent-ipv6: 195646487 dns-tcp-responses-sent-ipv4: 14480798 dns-tcp-responses-sent-ipv6: 1296305