--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5359154775 dns-udp-queries-received-ipv6: 1105192746 dns-tcp-queries-received-ipv4: 598500735 dns-tcp-queries-received-ipv6: 155274699 dns-udp-responses-sent-ipv4: 4696737227 dns-udp-responses-sent-ipv6: 965900329 dns-tcp-responses-sent-ipv4: 569184789 dns-tcp-responses-sent-ipv6: 140118790