--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6063276061 dns-udp-queries-received-ipv6: 1282610487 dns-tcp-queries-received-ipv4: 300130902 dns-tcp-queries-received-ipv6: 114591026 dns-udp-responses-sent-ipv4: 5873106350 dns-udp-responses-sent-ipv6: 1281159201 dns-tcp-responses-sent-ipv4: 289507830 dns-tcp-responses-sent-ipv6: 115004224