--- service: a.root-servers.net start-period: '2014-02-22T00:00:00Z' end-period: '2014-02-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1901225694 dns-udp-queries-received-ipv6: 70675625 dns-tcp-queries-received-ipv4: 9630457 dns-tcp-queries-received-ipv6: 1114015 dns-udp-responses-sent-ipv4: 1862557042 dns-udp-responses-sent-ipv6: 70665479 dns-tcp-responses-sent-ipv4: 9688244 dns-tcp-responses-sent-ipv6: 115