--- service: a.root-servers.net start-period: '2016-04-29T00:00:00Z' end-period: '2016-04-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5372753193 dns-udp-queries-received-ipv6: 321351194 dns-tcp-queries-received-ipv4: 69202016 dns-tcp-queries-received-ipv6: 5149854 dns-udp-responses-sent-ipv4: 5372116337 dns-udp-responses-sent-ipv6: 320932731 dns-tcp-responses-sent-ipv4: 60631407 dns-tcp-responses-sent-ipv6: 1878606