--- service: i.root-servers.net start-period: '2016-02-01T00:00:00Z' end-period: '2016-02-02T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5338926332 dns-udp-queries-received-ipv6: 411575669 dns-tcp-queries-received-ipv4: 27742965 dns-tcp-queries-received-ipv6: 775114 dns-udp-responses-sent-ipv4: 5267496379 dns-udp-responses-sent-ipv6: 415479372 dns-tcp-responses-sent-ipv4: 27677373 dns-tcp-responses-sent-ipv6: 775918