--- service: a.root-servers.net start-period: '2017-02-09T00:00:00Z' end-period: '2017-02-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4729484156 dns-udp-queries-received-ipv6: 510276515 dns-tcp-queries-received-ipv4: 154267476 dns-tcp-queries-received-ipv6: 8044016 dns-udp-responses-sent-ipv4: 4724675648 dns-udp-responses-sent-ipv6: 510165058 dns-tcp-responses-sent-ipv4: 154809349 dns-tcp-responses-sent-ipv6: 8052804