--- service: i.root-servers.net start-period: '2013-12-26T00:00:00Z' end-period: '2013-12-27T00:00:08Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2200810319 dns-udp-queries-received-ipv6: 137284883 dns-tcp-queries-received-ipv4: 4682369 dns-tcp-queries-received-ipv6: 251056 dns-udp-responses-sent-ipv4: 2149978156 dns-udp-responses-sent-ipv6: 137412599 dns-tcp-responses-sent-ipv4: 4690259 dns-tcp-responses-sent-ipv6: 253414