--- service: a.root-servers.net start-period: '2014-01-02T00:00:00Z' end-period: '2014-01-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1417411402 dns-udp-queries-received-ipv6: 50038921 dns-tcp-queries-received-ipv4: 6820557 dns-tcp-queries-received-ipv6: 707560 dns-udp-responses-sent-ipv4: 1415458199 dns-udp-responses-sent-ipv6: 50045250 dns-tcp-responses-sent-ipv4: 7030574 dns-tcp-responses-sent-ipv6: 60