--- service: i.root-servers.net start-period: '2013-08-01T00:00:00Z' end-period: '2013-08-02T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2259931697 dns-udp-queries-received-ipv6: 148673543 dns-tcp-queries-received-ipv4: 4781339 dns-tcp-queries-received-ipv6: 183179 dns-udp-responses-sent-ipv4: 2194710385 dns-udp-responses-sent-ipv6: 148641539 dns-tcp-responses-sent-ipv4: 4737296 dns-tcp-responses-sent-ipv6: 184724