--- service: i.root-servers.net start-period: '2014-09-06T00:00:00Z' end-period: '2014-09-07T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2642936004 dns-udp-queries-received-ipv6: 195541981 dns-tcp-queries-received-ipv4: 5547698 dns-tcp-queries-received-ipv6: 237019 dns-udp-responses-sent-ipv4: 2591597298 dns-udp-responses-sent-ipv6: 195513442 dns-tcp-responses-sent-ipv4: 5644863 dns-tcp-responses-sent-ipv6: 238973