--- version: rssac002v3 service: i.root-servers.net start-period: '2021-03-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4840466149 dns-udp-queries-received-ipv6: 944268770 dns-tcp-queries-received-ipv4: 419018140 dns-tcp-queries-received-ipv6: 125437167 dns-udp-responses-sent-ipv4: 3971871650 dns-udp-responses-sent-ipv6: 870390490 dns-tcp-responses-sent-ipv4: 322712724 dns-tcp-responses-sent-ipv6: 123729559