--- service: a.root-servers.net start-period: '2014-06-09T00:00:00Z' end-period: '2014-06-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1800043401 dns-udp-queries-received-ipv6: 110191455 dns-tcp-queries-received-ipv4: 9616147 dns-tcp-queries-received-ipv6: 1482920 dns-udp-responses-sent-ipv4: 1799440686 dns-udp-responses-sent-ipv6: 110218122 dns-tcp-responses-sent-ipv4: 9683569 dns-tcp-responses-sent-ipv6: 493983