--- service: i.root-servers.net start-period: '2016-02-06T00:00:00Z' end-period: '2016-02-07T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4616123351 dns-udp-queries-received-ipv6: 370636204 dns-tcp-queries-received-ipv4: 25753526 dns-tcp-queries-received-ipv6: 873779 dns-udp-responses-sent-ipv4: 4554700791 dns-udp-responses-sent-ipv6: 376421294 dns-tcp-responses-sent-ipv4: 25783802 dns-tcp-responses-sent-ipv6: 877040