--- service: i.root-servers.net start-period: '2015-02-15T00:00:00Z' end-period: '2015-02-16T00:00:08Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3102678444 dns-udp-queries-received-ipv6: 248799221 dns-tcp-queries-received-ipv4: 6457084 dns-tcp-queries-received-ipv6: 204790 dns-udp-responses-sent-ipv4: 3056158680 dns-udp-responses-sent-ipv6: 248755011 dns-tcp-responses-sent-ipv4: 6505492 dns-tcp-responses-sent-ipv6: 213450