--- service: a.root-servers.net start-period: '2017-01-10T00:00:00Z' end-period: '2017-01-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8764023790 dns-udp-queries-received-ipv6: 806026717 dns-tcp-queries-received-ipv4: 250963992 dns-tcp-queries-received-ipv6: 11347006 dns-udp-responses-sent-ipv4: 8708349194 dns-udp-responses-sent-ipv6: 800404448 dns-tcp-responses-sent-ipv4: 250454110 dns-tcp-responses-sent-ipv6: 12276835