--- service: i.root-servers.net start-period: '2014-07-07T00:00:00Z' end-period: '2014-07-08T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3252061115 dns-udp-queries-received-ipv6: 216578905 dns-tcp-queries-received-ipv4: 6513385 dns-tcp-queries-received-ipv6: 266286 dns-udp-responses-sent-ipv4: 3198471800 dns-udp-responses-sent-ipv6: 220450637 dns-tcp-responses-sent-ipv4: 6731432 dns-tcp-responses-sent-ipv6: 268386