--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5284932892 dns-udp-queries-received-ipv6: 1356567875 dns-tcp-queries-received-ipv4: 279913081 dns-tcp-queries-received-ipv6: 92378214 dns-udp-responses-sent-ipv4: 5112928486 dns-udp-responses-sent-ipv6: 1354945024 dns-tcp-responses-sent-ipv4: 273264084 dns-tcp-responses-sent-ipv6: 92661336