--- service: i.root-servers.net start-period: '2015-02-25T00:00:00Z' end-period: '2015-02-26T00:00:08Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3335409414 dns-udp-queries-received-ipv6: 255835151 dns-tcp-queries-received-ipv4: 7896820 dns-tcp-queries-received-ipv6: 230858 dns-udp-responses-sent-ipv4: 3284949298 dns-udp-responses-sent-ipv6: 255815163 dns-tcp-responses-sent-ipv4: 7955574 dns-tcp-responses-sent-ipv6: 236161