--- version: rssac002v3 service: i.root-servers.net start-period: '2020-12-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5297912723 dns-udp-queries-received-ipv6: 1051744379 dns-tcp-queries-received-ipv4: 561183667 dns-tcp-queries-received-ipv6: 147270425 dns-udp-responses-sent-ipv4: 4107553697 dns-udp-responses-sent-ipv6: 920618834 dns-tcp-responses-sent-ipv4: 427867431 dns-tcp-responses-sent-ipv6: 137115641