--- service: a.root-servers.net start-period: '2014-06-04T00:00:00Z' end-period: '2014-06-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1883724790 dns-udp-queries-received-ipv6: 118716311 dns-tcp-queries-received-ipv4: 9666296 dns-tcp-queries-received-ipv6: 1266387 dns-udp-responses-sent-ipv4: 1883468287 dns-udp-responses-sent-ipv6: 118742603 dns-tcp-responses-sent-ipv4: 9707814 dns-tcp-responses-sent-ipv6: 492183