--- service: a.root-servers.net start-period: '2015-10-09T00:00:00Z' end-period: '2015-10-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3017253685 dns-udp-queries-received-ipv6: 238423140 dns-tcp-queries-received-ipv4: 19995019 dns-tcp-queries-received-ipv6: 7102510 dns-udp-responses-sent-ipv4: 3039362575 dns-udp-responses-sent-ipv6: 237560361 dns-tcp-responses-sent-ipv4: 16804489 dns-tcp-responses-sent-ipv6: 6103793