--- service: a.root-servers.net start-period: '2016-04-06T00:00:00Z' end-period: '2016-04-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5525732919 dns-udp-queries-received-ipv6: 352397624 dns-tcp-queries-received-ipv4: 68849181 dns-tcp-queries-received-ipv6: 3593298 dns-udp-responses-sent-ipv4: 5499240257 dns-udp-responses-sent-ipv6: 351488191 dns-tcp-responses-sent-ipv4: 54899872 dns-tcp-responses-sent-ipv6: 271154