--- service: i.root-servers.net start-period: '2014-10-19T00:00:00Z' end-period: '2014-10-20T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2695719612 dns-udp-queries-received-ipv6: 203822975 dns-tcp-queries-received-ipv4: 6848060 dns-tcp-queries-received-ipv6: 193368 dns-udp-responses-sent-ipv4: 2650383655 dns-udp-responses-sent-ipv6: 206693807 dns-tcp-responses-sent-ipv4: 6923764 dns-tcp-responses-sent-ipv6: 195708