--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5424516183 dns-udp-queries-received-ipv6: 1437922231 dns-tcp-queries-received-ipv4: 298168110 dns-tcp-queries-received-ipv6: 94895293 dns-udp-responses-sent-ipv4: 5257068619 dns-udp-responses-sent-ipv6: 1435534786 dns-tcp-responses-sent-ipv4: 285598001 dns-tcp-responses-sent-ipv6: 94888754