--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5009960703 dns-udp-queries-received-ipv6: 966945074 dns-tcp-queries-received-ipv4: 259587649 dns-tcp-queries-received-ipv6: 77533153 dns-udp-responses-sent-ipv4: 4841632250 dns-udp-responses-sent-ipv6: 965493080 dns-tcp-responses-sent-ipv4: 250502283 dns-tcp-responses-sent-ipv6: 77921071