--- version: rssac002v3 service: a.root-servers.net start-period: '2019-08-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6622177412 dns-udp-queries-received-ipv6: 1418663432 dns-tcp-queries-received-ipv4: 192101570 dns-tcp-queries-received-ipv6: 34377609 dns-udp-responses-sent-ipv4: 6461564854 dns-udp-responses-sent-ipv6: 1417859138 dns-tcp-responses-sent-ipv4: 187011143 dns-tcp-responses-sent-ipv6: 35152803