--- version: rssac002v3 service: a.root-servers.net start-period: '2021-08-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5530251432 dns-udp-queries-received-ipv6: 1357571622 dns-tcp-queries-received-ipv4: 305965376 dns-tcp-queries-received-ipv6: 101791701 dns-udp-responses-sent-ipv4: 5435779545 dns-udp-responses-sent-ipv6: 1385402262 dns-tcp-responses-sent-ipv4: 294385903 dns-tcp-responses-sent-ipv6: 101830825