--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5382358781 dns-udp-queries-received-ipv6: 1356109144 dns-tcp-queries-received-ipv4: 291838191 dns-tcp-queries-received-ipv6: 106281517 dns-udp-responses-sent-ipv4: 5232090260 dns-udp-responses-sent-ipv6: 1354570401 dns-tcp-responses-sent-ipv4: 283352166 dns-tcp-responses-sent-ipv6: 106605031