--- service: a.root-servers.net start-period: '2015-02-03T00:00:00Z' end-period: '2015-02-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3079981555 dns-udp-queries-received-ipv6: 207540863 dns-tcp-queries-received-ipv4: 16237132 dns-tcp-queries-received-ipv6: 2186228 dns-udp-responses-sent-ipv4: 3080079054 dns-udp-responses-sent-ipv6: 207512142 dns-tcp-responses-sent-ipv4: 14615712 dns-tcp-responses-sent-ipv6: 1398110