--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5724544340 dns-udp-queries-received-ipv6: 1238270831 dns-tcp-queries-received-ipv4: 314926963 dns-tcp-queries-received-ipv6: 133017619 dns-udp-responses-sent-ipv4: 5590893647 dns-udp-responses-sent-ipv6: 1245216803 dns-tcp-responses-sent-ipv4: 299791494 dns-tcp-responses-sent-ipv6: 138536084