--- service: a.root-servers.net start-period: '2014-08-20T00:00:00Z' end-period: '2014-08-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2028769737 dns-udp-queries-received-ipv6: 143765801 dns-tcp-queries-received-ipv4: 18910811 dns-tcp-queries-received-ipv6: 1932814 dns-udp-responses-sent-ipv4: 2028750225 dns-udp-responses-sent-ipv6: 143748934 dns-tcp-responses-sent-ipv4: 18159696 dns-tcp-responses-sent-ipv6: 948567