--- service: a.root-servers.net start-period: '2015-08-26T00:00:00Z' end-period: '2015-08-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4677142469 dns-udp-queries-received-ipv6: 279983723 dns-tcp-queries-received-ipv4: 19015740 dns-tcp-queries-received-ipv6: 8883934 dns-udp-responses-sent-ipv4: 4706040996 dns-udp-responses-sent-ipv6: 282936189 dns-tcp-responses-sent-ipv4: 15881430 dns-tcp-responses-sent-ipv6: 7046036