--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5682982297 dns-udp-queries-received-ipv6: 1408107319 dns-tcp-queries-received-ipv4: 328324943 dns-tcp-queries-received-ipv6: 163472433 dns-udp-responses-sent-ipv4: 5684072069 dns-udp-responses-sent-ipv6: 1428652828 dns-tcp-responses-sent-ipv4: 316839787 dns-tcp-responses-sent-ipv6: 173730114