--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4866572792 dns-udp-queries-received-ipv6: 1053629083 dns-tcp-queries-received-ipv4: 579715458 dns-tcp-queries-received-ipv6: 143212380 dns-udp-responses-sent-ipv4: 4260356171 dns-udp-responses-sent-ipv6: 938892987 dns-tcp-responses-sent-ipv4: 543585896 dns-tcp-responses-sent-ipv6: 127452003