--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5574732716 dns-udp-queries-received-ipv6: 958466422 dns-tcp-queries-received-ipv4: 490990449 dns-tcp-queries-received-ipv6: 121074796 dns-udp-responses-sent-ipv4: 4554532645 dns-udp-responses-sent-ipv6: 914982885 dns-tcp-responses-sent-ipv4: 399892375 dns-tcp-responses-sent-ipv6: 109418198