--- service: i.root-servers.net start-period: '2015-05-06T00:00:00Z' end-period: '2015-05-07T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3825916631 dns-udp-queries-received-ipv6: 254807020 dns-tcp-queries-received-ipv4: 10610481 dns-tcp-queries-received-ipv6: 286293 dns-udp-responses-sent-ipv4: 3765112518 dns-udp-responses-sent-ipv6: 257708229 dns-tcp-responses-sent-ipv4: 10685758 dns-tcp-responses-sent-ipv6: 293405