--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6106524307 dns-udp-queries-received-ipv6: 940665798 dns-tcp-queries-received-ipv4: 237363073 dns-tcp-queries-received-ipv6: 68688138 dns-udp-responses-sent-ipv4: 5927190813 dns-udp-responses-sent-ipv6: 933572845 dns-tcp-responses-sent-ipv4: 234451659 dns-tcp-responses-sent-ipv6: 68814228