--- service: a.root-servers.net start-period: '2015-05-27T00:00:00Z' end-period: '2015-05-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3118997590 dns-udp-queries-received-ipv6: 185723868 dns-tcp-queries-received-ipv4: 18341417 dns-tcp-queries-received-ipv6: 2540115 dns-udp-responses-sent-ipv4: 3147534796 dns-udp-responses-sent-ipv6: 187800641 dns-tcp-responses-sent-ipv4: 16534123 dns-tcp-responses-sent-ipv6: 1195971