--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5215357185 dns-udp-queries-received-ipv6: 1359497644 dns-tcp-queries-received-ipv4: 284974342 dns-tcp-queries-received-ipv6: 57898132 dns-udp-responses-sent-ipv4: 5397595572 dns-udp-responses-sent-ipv6: 1383597186 dns-tcp-responses-sent-ipv4: 282206245 dns-tcp-responses-sent-ipv6: 58104197