--- service: a.root-servers.net start-period: '2014-09-18T00:00:00Z' end-period: '2014-09-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2114747184 dns-udp-queries-received-ipv6: 156878244 dns-tcp-queries-received-ipv4: 13929300 dns-tcp-queries-received-ipv6: 1574414 dns-udp-responses-sent-ipv4: 2115393243 dns-udp-responses-sent-ipv6: 156739724 dns-tcp-responses-sent-ipv4: 13226276 dns-tcp-responses-sent-ipv6: 1054397