--- service: a.root-servers.net start-period: '2014-09-11T00:00:00Z' end-period: '2014-09-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2118903545 dns-udp-queries-received-ipv6: 154942249 dns-tcp-queries-received-ipv4: 13796016 dns-tcp-queries-received-ipv6: 1711743 dns-udp-responses-sent-ipv4: 2126576551 dns-udp-responses-sent-ipv6: 155145205 dns-tcp-responses-sent-ipv4: 13079118 dns-tcp-responses-sent-ipv6: 1000989