--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6200527370 dns-udp-queries-received-ipv6: 1117058390 dns-tcp-queries-received-ipv4: 231012379 dns-tcp-queries-received-ipv6: 81967063 dns-udp-responses-sent-ipv4: 5990939247 dns-udp-responses-sent-ipv6: 1098038432 dns-tcp-responses-sent-ipv4: 228174981 dns-tcp-responses-sent-ipv6: 81975720