--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5750911906 dns-udp-queries-received-ipv6: 1357905370 dns-tcp-queries-received-ipv4: 329683956 dns-tcp-queries-received-ipv6: 192534127 dns-udp-responses-sent-ipv4: 5578208886 dns-udp-responses-sent-ipv6: 1354206574 dns-tcp-responses-sent-ipv4: 317061155 dns-tcp-responses-sent-ipv6: 224856187