--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4799152809 dns-udp-queries-received-ipv6: 823184822 dns-tcp-queries-received-ipv4: 457512391 dns-tcp-queries-received-ipv6: 106215850 dns-udp-responses-sent-ipv4: 4172332474 dns-udp-responses-sent-ipv6: 848106741 dns-tcp-responses-sent-ipv4: 391112086 dns-tcp-responses-sent-ipv6: 98464164