--- version: rssac002v3 service: a.root-servers.net start-period: '2020-04-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8165159522 dns-udp-queries-received-ipv6: 1360305769 dns-tcp-queries-received-ipv4: 288353811 dns-tcp-queries-received-ipv6: 127297885 dns-udp-responses-sent-ipv4: 7923994730 dns-udp-responses-sent-ipv6: 1349742766 dns-tcp-responses-sent-ipv4: 283568210 dns-tcp-responses-sent-ipv6: 127393100