--- service: i.root-servers.net start-period: '2015-08-06T00:00:00Z' end-period: '2015-08-07T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5483976679 dns-udp-queries-received-ipv6: 267690493 dns-tcp-queries-received-ipv4: 13107894 dns-tcp-queries-received-ipv6: 301194 dns-udp-responses-sent-ipv4: 5434611540 dns-udp-responses-sent-ipv6: 269915904 dns-tcp-responses-sent-ipv4: 13019054 dns-tcp-responses-sent-ipv6: 309878