--- service: i.root-servers.net start-period: '2014-04-17T00:00:00Z' end-period: '2014-04-18T00:01:47Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3160737364 dns-udp-queries-received-ipv6: 186842531 dns-tcp-queries-received-ipv4: 6296841 dns-tcp-queries-received-ipv6: 262404 dns-udp-responses-sent-ipv4: 3099228320 dns-udp-responses-sent-ipv6: 187232251 dns-tcp-responses-sent-ipv4: 6317435 dns-tcp-responses-sent-ipv6: 263701