--- service: a.root-servers.net start-period: '2014-02-12T00:00:00Z' end-period: '2014-02-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1563281808 dns-udp-queries-received-ipv6: 84122088 dns-tcp-queries-received-ipv4: 8992684 dns-tcp-queries-received-ipv6: 1091944 dns-udp-responses-sent-ipv4: 1561043597 dns-udp-responses-sent-ipv6: 84104639 dns-tcp-responses-sent-ipv4: 9046590 dns-tcp-responses-sent-ipv6: 106