--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5980248310 dns-udp-queries-received-ipv6: 1183117333 dns-tcp-queries-received-ipv4: 294170455 dns-tcp-queries-received-ipv6: 118529168 dns-udp-responses-sent-ipv4: 5809657197 dns-udp-responses-sent-ipv6: 1181712200 dns-tcp-responses-sent-ipv4: 282722440 dns-tcp-responses-sent-ipv6: 118999138