--- version: rssac002v3 service: a.root-servers.net start-period: '2021-08-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5034610528 dns-udp-queries-received-ipv6: 1257128218 dns-tcp-queries-received-ipv4: 326946337 dns-tcp-queries-received-ipv6: 97673980 dns-udp-responses-sent-ipv4: 4965283727 dns-udp-responses-sent-ipv6: 1280987885 dns-tcp-responses-sent-ipv4: 315787187 dns-tcp-responses-sent-ipv6: 97666815