--- service: a.root-servers.net start-period: '2017-02-17T00:00:00Z' end-period: '2017-02-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4363788037 dns-udp-queries-received-ipv6: 466930643 dns-tcp-queries-received-ipv4: 87847814 dns-tcp-queries-received-ipv6: 9739460 dns-udp-responses-sent-ipv4: 4359443526 dns-udp-responses-sent-ipv6: 466778095 dns-tcp-responses-sent-ipv4: 88369576 dns-tcp-responses-sent-ipv6: 9740515