--- service: i.root-servers.net start-period: '2014-01-29T00:00:00Z' end-period: '2014-01-30T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2445879593 dns-udp-queries-received-ipv6: 162416234 dns-tcp-queries-received-ipv4: 5385612 dns-tcp-queries-received-ipv6: 270435 dns-udp-responses-sent-ipv4: 2390712371 dns-udp-responses-sent-ipv6: 161787317 dns-tcp-responses-sent-ipv4: 5397587 dns-tcp-responses-sent-ipv6: 274418