--- service: a.root-servers.net start-period: '2014-06-28T00:00:00Z' end-period: '2014-06-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1611296753 dns-udp-queries-received-ipv6: 107977337 dns-tcp-queries-received-ipv4: 12682188 dns-tcp-queries-received-ipv6: 723306 dns-udp-responses-sent-ipv4: 1611121371 dns-udp-responses-sent-ipv6: 108012824 dns-tcp-responses-sent-ipv4: 12774013 dns-tcp-responses-sent-ipv6: 500872