--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4958556405 dns-udp-queries-received-ipv6: 1002489810 dns-tcp-queries-received-ipv4: 444924832 dns-tcp-queries-received-ipv6: 136285463 dns-udp-responses-sent-ipv4: 4110833176 dns-udp-responses-sent-ipv6: 928070607 dns-tcp-responses-sent-ipv4: 365217841 dns-tcp-responses-sent-ipv6: 136951346