--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5252975622 dns-udp-queries-received-ipv6: 910767219 dns-tcp-queries-received-ipv4: 454594621 dns-tcp-queries-received-ipv6: 115694446 dns-udp-responses-sent-ipv4: 4369217366 dns-udp-responses-sent-ipv6: 846703917 dns-tcp-responses-sent-ipv4: 363085490 dns-tcp-responses-sent-ipv6: 103450704