--- service: i.root-servers.net start-period: '2015-02-24T00:00:00Z' end-period: '2015-02-25T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3335476798 dns-udp-queries-received-ipv6: 253891147 dns-tcp-queries-received-ipv4: 7676148 dns-tcp-queries-received-ipv6: 218919 dns-udp-responses-sent-ipv4: 3285910334 dns-udp-responses-sent-ipv6: 253871908 dns-tcp-responses-sent-ipv4: 7724595 dns-tcp-responses-sent-ipv6: 225774