--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5696921843 dns-udp-queries-received-ipv6: 1151895627 dns-tcp-queries-received-ipv4: 292465305 dns-tcp-queries-received-ipv6: 114676437 dns-udp-responses-sent-ipv4: 5534493073 dns-udp-responses-sent-ipv6: 1150495906 dns-tcp-responses-sent-ipv4: 280181269 dns-tcp-responses-sent-ipv6: 115063203