--- version: rssac002v3 service: a.root-servers.net start-period: '2021-08-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4912045187 dns-udp-queries-received-ipv6: 1170840477 dns-tcp-queries-received-ipv4: 283212928 dns-tcp-queries-received-ipv6: 97802723 dns-udp-responses-sent-ipv4: 4888373014 dns-udp-responses-sent-ipv6: 1189630123 dns-tcp-responses-sent-ipv4: 272929026 dns-tcp-responses-sent-ipv6: 97919183