--- version: rssac002v3 service: i.root-servers.net start-period: '2021-08-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5141352876 dns-udp-queries-received-ipv6: 1243720158 dns-tcp-queries-received-ipv4: 608365937 dns-tcp-queries-received-ipv6: 149382196 dns-udp-responses-sent-ipv4: 4216852559 dns-udp-responses-sent-ipv6: 1082393714 dns-tcp-responses-sent-ipv4: 570371360 dns-tcp-responses-sent-ipv6: 148123636