--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4845633095 dns-udp-queries-received-ipv6: 971709686 dns-tcp-queries-received-ipv4: 269838980 dns-tcp-queries-received-ipv6: 90788029 dns-udp-responses-sent-ipv4: 4677768140 dns-udp-responses-sent-ipv6: 970298595 dns-tcp-responses-sent-ipv4: 256039683 dns-tcp-responses-sent-ipv6: 91240146