--- service: i.root-servers.net start-period: '2015-03-11T00:00:00Z' end-period: '2015-03-12T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3670184930 dns-udp-queries-received-ipv6: 259811365 dns-tcp-queries-received-ipv4: 7383609 dns-tcp-queries-received-ipv6: 248468 dns-udp-responses-sent-ipv4: 3622581324 dns-udp-responses-sent-ipv6: 263441904 dns-tcp-responses-sent-ipv4: 7432791 dns-tcp-responses-sent-ipv6: 254102