--- service: a.root-servers.net start-period: '2014-06-13T00:00:00Z' end-period: '2014-06-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1788514910 dns-udp-queries-received-ipv6: 116789914 dns-tcp-queries-received-ipv4: 9281549 dns-tcp-queries-received-ipv6: 1367509 dns-udp-responses-sent-ipv4: 1788251889 dns-udp-responses-sent-ipv6: 116801788 dns-tcp-responses-sent-ipv4: 9340181 dns-tcp-responses-sent-ipv6: 491237