--- service: a.root-servers.net start-period: '2014-08-21T00:00:00Z' end-period: '2014-08-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1899962141 dns-udp-queries-received-ipv6: 142722142 dns-tcp-queries-received-ipv4: 13857090 dns-tcp-queries-received-ipv6: 1929006 dns-udp-responses-sent-ipv4: 1900017730 dns-udp-responses-sent-ipv6: 142675726 dns-tcp-responses-sent-ipv4: 13120602 dns-tcp-responses-sent-ipv6: 950758