--- service: a.root-servers.net start-period: '2017-02-22T00:00:00Z' end-period: '2017-02-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4374852482 dns-udp-queries-received-ipv6: 486491092 dns-tcp-queries-received-ipv4: 184932209 dns-tcp-queries-received-ipv6: 9770306 dns-udp-responses-sent-ipv4: 4369064986 dns-udp-responses-sent-ipv6: 486421381 dns-tcp-responses-sent-ipv4: 185821685 dns-tcp-responses-sent-ipv6: 9837007