--- service: a.root-servers.net start-period: '2015-02-26T00:00:00Z' end-period: '2015-02-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2981467805 dns-udp-queries-received-ipv6: 221152602 dns-tcp-queries-received-ipv4: 17225789 dns-tcp-queries-received-ipv6: 2211251 dns-udp-responses-sent-ipv4: 2965188426 dns-udp-responses-sent-ipv6: 220507082 dns-tcp-responses-sent-ipv4: 14839033 dns-tcp-responses-sent-ipv6: 1062921