--- service: a.root-servers.net start-period: '2015-01-29T00:00:00Z' end-period: '2015-01-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3004552935 dns-udp-queries-received-ipv6: 236534136 dns-tcp-queries-received-ipv4: 16566294 dns-tcp-queries-received-ipv6: 2236146 dns-udp-responses-sent-ipv4: 3004239340 dns-udp-responses-sent-ipv6: 236394998 dns-tcp-responses-sent-ipv4: 14798113 dns-tcp-responses-sent-ipv6: 1396423