--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5134394951 dns-udp-queries-received-ipv6: 1118741871 dns-tcp-queries-received-ipv4: 540899857 dns-tcp-queries-received-ipv6: 148396439 dns-udp-responses-sent-ipv4: 4472107885 dns-udp-responses-sent-ipv6: 987324197 dns-tcp-responses-sent-ipv4: 486870287 dns-tcp-responses-sent-ipv6: 130302411