--- service: i.root-servers.net start-period: '2013-08-31T00:00:00Z' end-period: '2013-09-01T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1908444821 dns-udp-queries-received-ipv6: 130098747 dns-tcp-queries-received-ipv4: 4823061 dns-tcp-queries-received-ipv6: 160595 dns-udp-responses-sent-ipv4: 1870296856 dns-udp-responses-sent-ipv6: 130073232 dns-tcp-responses-sent-ipv4: 4787090 dns-tcp-responses-sent-ipv6: 162832