--- service: i.root-servers.net start-period: '2015-09-26T00:00:00Z' end-period: '2015-09-26T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3432202462 dns-udp-queries-received-ipv6: 293394933 dns-tcp-queries-received-ipv4: 25956549 dns-tcp-queries-received-ipv6: 431974 dns-udp-responses-sent-ipv4: 3384541885 dns-udp-responses-sent-ipv6: 293343128 dns-tcp-responses-sent-ipv4: 25927012 dns-tcp-responses-sent-ipv6: 435887