--- service: i.root-servers.net start-period: '2014-06-28T00:00:00Z' end-period: '2014-06-29T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2661574155 dns-udp-queries-received-ipv6: 220533320 dns-tcp-queries-received-ipv4: 6039657 dns-tcp-queries-received-ipv6: 245987 dns-udp-responses-sent-ipv4: 2614488659 dns-udp-responses-sent-ipv6: 222578136 dns-tcp-responses-sent-ipv4: 6216625 dns-tcp-responses-sent-ipv6: 249261