--- service: a.root-servers.net start-period: '2015-10-16T00:00:00Z' end-period: '2015-10-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3032868069 dns-udp-queries-received-ipv6: 46707148 dns-tcp-queries-received-ipv4: 20136230 dns-tcp-queries-received-ipv6: 3946756 dns-udp-responses-sent-ipv4: 3034920848 dns-udp-responses-sent-ipv6: 47597016 dns-tcp-responses-sent-ipv4: 17512662 dns-tcp-responses-sent-ipv6: 3807992