--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5406789656 dns-udp-queries-received-ipv6: 1437925473 dns-tcp-queries-received-ipv4: 305181746 dns-tcp-queries-received-ipv6: 98717796 dns-udp-responses-sent-ipv4: 5248949293 dns-udp-responses-sent-ipv6: 1435644636 dns-tcp-responses-sent-ipv4: 294220685 dns-tcp-responses-sent-ipv6: 98478040