--- service: i.root-servers.net start-period: '2014-07-17T00:00:00Z' end-period: '2014-07-18T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5163839759 dns-udp-queries-received-ipv6: 345953988 dns-tcp-queries-received-ipv4: 28952718 dns-tcp-queries-received-ipv6: 730322 dns-udp-responses-sent-ipv4: 5103991675 dns-udp-responses-sent-ipv6: 345873141 dns-tcp-responses-sent-ipv4: 28772203 dns-tcp-responses-sent-ipv6: 717047