--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5388343457 dns-udp-queries-received-ipv6: 1038343450 dns-tcp-queries-received-ipv4: 514086519 dns-tcp-queries-received-ipv6: 112535894 dns-udp-responses-sent-ipv4: 4684459383 dns-udp-responses-sent-ipv6: 1036504512 dns-tcp-responses-sent-ipv4: 446776228 dns-tcp-responses-sent-ipv6: 106161450