--- version: rssac002v3 service: i.root-servers.net start-period: '2021-08-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4751988242 dns-udp-queries-received-ipv6: 1068773020 dns-tcp-queries-received-ipv4: 601434291 dns-tcp-queries-received-ipv6: 146129861 dns-udp-responses-sent-ipv4: 3886618938 dns-udp-responses-sent-ipv6: 925195206 dns-tcp-responses-sent-ipv4: 567341142 dns-tcp-responses-sent-ipv6: 144599441