--- version: rssac002v3 service: a.root-servers.net start-period: '2020-01-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6609437526 dns-udp-queries-received-ipv6: 955449578 dns-tcp-queries-received-ipv4: 272031415 dns-tcp-queries-received-ipv6: 70126431 dns-udp-responses-sent-ipv4: 6402755975 dns-udp-responses-sent-ipv6: 950125030 dns-tcp-responses-sent-ipv4: 248568865 dns-tcp-responses-sent-ipv6: 70082769