--- version: rssac002v3 service: a.root-servers.net start-period: '2020-01-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6249887535 dns-udp-queries-received-ipv6: 900535600 dns-tcp-queries-received-ipv4: 280951085 dns-tcp-queries-received-ipv6: 68977362 dns-udp-responses-sent-ipv4: 6055175000 dns-udp-responses-sent-ipv6: 897752649 dns-tcp-responses-sent-ipv4: 259113150 dns-tcp-responses-sent-ipv6: 68954614