--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5049589366 dns-udp-queries-received-ipv6: 890757133 dns-tcp-queries-received-ipv4: 471630182 dns-tcp-queries-received-ipv6: 110215400 dns-udp-responses-sent-ipv4: 4376234861 dns-udp-responses-sent-ipv6: 874508454 dns-tcp-responses-sent-ipv4: 394881057 dns-tcp-responses-sent-ipv6: 103202199