--- service: i.root-servers.net start-period: '2015-10-08T00:00:00Z' end-period: '2015-10-09T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4270578863 dns-udp-queries-received-ipv6: 339010437 dns-tcp-queries-received-ipv4: 29901550 dns-tcp-queries-received-ipv6: 496217 dns-udp-responses-sent-ipv4: 4197745228 dns-udp-responses-sent-ipv6: 339002721 dns-tcp-responses-sent-ipv4: 29944206 dns-tcp-responses-sent-ipv6: 500225