--- service: i.root-servers.net start-period: '2015-11-30T00:00:00Z' end-period: '2015-12-01T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 21526376225 dns-udp-queries-received-ipv6: 335903410 dns-tcp-queries-received-ipv4: 25001259 dns-tcp-queries-received-ipv6: 784082 dns-udp-responses-sent-ipv4: 6191994665 dns-udp-responses-sent-ipv6: 337148212 dns-tcp-responses-sent-ipv4: 25045034 dns-tcp-responses-sent-ipv6: 783582