--- service: i.root-servers.net start-period: '2014-04-11T00:00:00Z' end-period: '2014-04-12T00:00:09Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2592430426 dns-udp-queries-received-ipv6: 171774825 dns-tcp-queries-received-ipv4: 6112777 dns-tcp-queries-received-ipv6: 261302 dns-udp-responses-sent-ipv4: 2537013105 dns-udp-responses-sent-ipv6: 172266430 dns-tcp-responses-sent-ipv4: 6120941 dns-tcp-responses-sent-ipv6: 263182