--- service: i.root-servers.net start-period: '2015-10-26T00:00:00Z' end-period: '2015-10-27T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4396911370 dns-udp-queries-received-ipv6: 339229637 dns-tcp-queries-received-ipv4: 16037129 dns-tcp-queries-received-ipv6: 490640 dns-udp-responses-sent-ipv4: 4344155049 dns-udp-responses-sent-ipv6: 339164382 dns-tcp-responses-sent-ipv4: 16104008 dns-tcp-responses-sent-ipv6: 501595