--- service: a.root-servers.net start-period: '2015-04-10T00:00:00Z' end-period: '2015-04-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3003251018 dns-udp-queries-received-ipv6: 230116322 dns-tcp-queries-received-ipv4: 21946859 dns-tcp-queries-received-ipv6: 3411428 dns-udp-responses-sent-ipv4: 2987532299 dns-udp-responses-sent-ipv6: 229308594 dns-tcp-responses-sent-ipv4: 17570607 dns-tcp-responses-sent-ipv6: 1693894