--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4474495598 dns-udp-queries-received-ipv6: 794862694 dns-tcp-queries-received-ipv4: 424710509 dns-tcp-queries-received-ipv6: 113754438 dns-udp-responses-sent-ipv4: 3797397978 dns-udp-responses-sent-ipv6: 758535147 dns-tcp-responses-sent-ipv4: 372314194 dns-tcp-responses-sent-ipv6: 113331738