--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4992828818 dns-udp-queries-received-ipv6: 1327089305 dns-tcp-queries-received-ipv4: 275248368 dns-tcp-queries-received-ipv6: 98283156 dns-udp-responses-sent-ipv4: 4832231100 dns-udp-responses-sent-ipv6: 1324951751 dns-tcp-responses-sent-ipv4: 267303438 dns-tcp-responses-sent-ipv6: 98108330