--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5263163264 dns-udp-queries-received-ipv6: 1274506868 dns-tcp-queries-received-ipv4: 259757799 dns-tcp-queries-received-ipv6: 91583256 dns-udp-responses-sent-ipv4: 5113665257 dns-udp-responses-sent-ipv6: 1272072482 dns-tcp-responses-sent-ipv4: 253215852 dns-tcp-responses-sent-ipv6: 91521931