--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5730675576 dns-udp-queries-received-ipv6: 1243108437 dns-tcp-queries-received-ipv4: 291903575 dns-tcp-queries-received-ipv6: 99900327 dns-udp-responses-sent-ipv4: 5638493119 dns-udp-responses-sent-ipv6: 1256474514 dns-tcp-responses-sent-ipv4: 280028910 dns-tcp-responses-sent-ipv6: 100016633