--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4756575953 dns-udp-queries-received-ipv6: 1097576231 dns-tcp-queries-received-ipv4: 291005676 dns-tcp-queries-received-ipv6: 97770454 dns-udp-responses-sent-ipv4: 4764509704 dns-udp-responses-sent-ipv6: 1120588347 dns-tcp-responses-sent-ipv4: 281189240 dns-tcp-responses-sent-ipv6: 97700002