--- service: a.root-servers.net start-period: '2015-10-04T00:00:00Z' end-period: '2015-10-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2878898951 dns-udp-queries-received-ipv6: 298433932 dns-tcp-queries-received-ipv4: 21313224 dns-tcp-queries-received-ipv6: 9124919 dns-udp-responses-sent-ipv4: 2879656339 dns-udp-responses-sent-ipv6: 295806556 dns-tcp-responses-sent-ipv4: 17769789 dns-tcp-responses-sent-ipv6: 7574220