--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5413948404 dns-udp-queries-received-ipv6: 1388905925 dns-tcp-queries-received-ipv4: 291288741 dns-tcp-queries-received-ipv6: 95718732 dns-udp-responses-sent-ipv4: 5243016029 dns-udp-responses-sent-ipv6: 1386371792 dns-tcp-responses-sent-ipv4: 282518767 dns-tcp-responses-sent-ipv6: 95716253