--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4806668450 dns-udp-queries-received-ipv6: 843056223 dns-tcp-queries-received-ipv4: 388850990 dns-tcp-queries-received-ipv6: 100817785 dns-udp-responses-sent-ipv4: 3928335759 dns-udp-responses-sent-ipv6: 814295642 dns-tcp-responses-sent-ipv4: 349179811 dns-tcp-responses-sent-ipv6: 94993104