--- service: a.root-servers.net start-period: '2015-02-05T00:00:00Z' end-period: '2015-02-05T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2824212138 dns-udp-queries-received-ipv6: 217997536 dns-tcp-queries-received-ipv4: 17035389 dns-tcp-queries-received-ipv6: 2175419 dns-udp-responses-sent-ipv4: 2823377685 dns-udp-responses-sent-ipv6: 217916321 dns-tcp-responses-sent-ipv4: 14941010 dns-tcp-responses-sent-ipv6: 1388732