--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5953593584 dns-udp-queries-received-ipv6: 1216299343 dns-tcp-queries-received-ipv4: 296659577 dns-tcp-queries-received-ipv6: 153726834 dns-udp-responses-sent-ipv4: 5762833289 dns-udp-responses-sent-ipv6: 1214822660 dns-tcp-responses-sent-ipv4: 284657467 dns-tcp-responses-sent-ipv6: 154141653