--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5902124486 dns-udp-queries-received-ipv6: 1169643020 dns-tcp-queries-received-ipv4: 290894123 dns-tcp-queries-received-ipv6: 114109570 dns-udp-responses-sent-ipv4: 5739309370 dns-udp-responses-sent-ipv6: 1167351315 dns-tcp-responses-sent-ipv4: 278263707 dns-tcp-responses-sent-ipv6: 114502494