--- service: i.root-servers.net start-period: '2015-02-04T00:00:00Z' end-period: '2015-02-05T00:00:07Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3554665731 dns-udp-queries-received-ipv6: 251529921 dns-tcp-queries-received-ipv4: 6987449 dns-tcp-queries-received-ipv6: 227011 dns-udp-responses-sent-ipv4: 3502791775 dns-udp-responses-sent-ipv6: 251439291 dns-tcp-responses-sent-ipv4: 7032230 dns-tcp-responses-sent-ipv6: 233406