--- service: a.root-servers.net start-period: '2017-02-14T00:00:00Z' end-period: '2017-02-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4919102783 dns-udp-queries-received-ipv6: 502526597 dns-tcp-queries-received-ipv4: 156352165 dns-tcp-queries-received-ipv6: 8877183 dns-udp-responses-sent-ipv4: 4914673660 dns-udp-responses-sent-ipv6: 502368158 dns-tcp-responses-sent-ipv4: 156738673 dns-tcp-responses-sent-ipv6: 8891419