--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5400875986 dns-udp-queries-received-ipv6: 1367708505 dns-tcp-queries-received-ipv4: 285949876 dns-tcp-queries-received-ipv6: 99776307 dns-udp-responses-sent-ipv4: 5246496110 dns-udp-responses-sent-ipv6: 1366013419 dns-tcp-responses-sent-ipv4: 276786129 dns-tcp-responses-sent-ipv6: 100024408