--- service: i.root-servers.net start-period: '2015-09-06T00:00:00Z' end-period: '2015-09-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3469891111 dns-udp-queries-received-ipv6: 250797253 dns-tcp-queries-received-ipv4: 25952212 dns-tcp-queries-received-ipv6: 393254 dns-udp-responses-sent-ipv4: 5039767307 dns-udp-responses-sent-ipv6: 250790169 dns-tcp-responses-sent-ipv4: 25880641 dns-tcp-responses-sent-ipv6: 397446